HESI A2 Vocabulary: The Word List + How to Remember It

The HESI A2 vocabulary section tests word meaning with a health-science lean — think anatomy terms and clinical language. Most versions run around 50 questions. Before you study a single word, check whether your program actually requires this section, because not all do. Then use a themed word list and spaced repetition, not a 500-word dump you will skim once and forget.

What the HESI A2 vocabulary section actually is

About 50 questions in around 50 minutes. The section is officially "Vocabulary and General Knowledge," and a handful of items may be unscored trial questions — so do not spiral if your count hits 55. But none of those figures are guaranteed: Elsevier updates the HESI A2, and every program customizes which sections you sit and what time limits apply. Treat anything you read — including this — as "probably right, verify before you commit."

Passing score works the same way: there is no universal one. Your school sets its own cut score, and it varies a lot — some programs want 75%, others 90%. A score that gets you accepted at one school can get you rejected at another, so look up your specific program’s requirements before you build a plan around a number you found on a blog.

Confirm your school’s requirement before you memorize anything

The HESI A2 has up to eight sections, and your program picks which you take. Vocabulary is required at most schools — but "most" is not "all." If yours does not include it, every hour on this section is an hour not spent on math or science, which your school probably does require. Two minutes on Elsevier’s student page can save two weeks of wrong studying. And if you are still dividing time across the sections your school does require, Testavia’s HESI A2 study guide breaks that out by timeline.

What the vocabulary section actually tests

People brace for one of two things — a wall of clinical jargon, or basic SAT-style vocabulary. Both are wrong. It is somewhere in between, tilted health-science. You will get exacerbate and deficit (ordinary academic words), then contraindication or distended two questions later. The clinical terms are not the majority, but they are where unprepared people give away easy points. Most questions put a word inside a sentence and ask you to pick the closest meaning, so reading context matters — and when context alone is not enough, breaking the word apart is.

How to decode a medical term you have never seen

Take bradycardia. If you have never seen it, it looks intimidating — but brady means slow and cardia means heart. Slow heart. You just decoded it. Once you know a handful of roots, prefixes, and suffixes, unfamiliar clinical terms stop being coin flips. The MedlinePlus guide to medical word parts is free and gets you there fast. Work any unknown term in this order:

1. Root first. The core meaning, usually a body part. Cardi = heart, pulmon = lungs, derm = skin.

2. Then the prefix. The front modifies it. Hyper = too much, hypo = too little, tachy = fast.

3. Then the suffix. The ending tells you what is happening. -itis = inflammation, -emia = blood condition, -ectomy = surgical removal.

4. Put it together. Hypotension = hypo (low) + tension (pressure) = low blood pressure.

5. Check it against the sentence. The surrounding words are a free clue. If your meaning clashes, slow down and reread.

The high-yield HESI A2 vocabulary list, grouped by theme

Most lists give you 200 words alphabetically — you read through, feel like you studied, and forget half by dinner. Alphabetical order is how dictionaries work, not how memory works. Memory runs on association: symptom words stick together, care-and-procedure terms stick together. Study them that way. This is a representative high-yield list, not the actual test bank — use it as a starting point, not a ceiling.

Keep definitions short — under a timer you want the version you can pull up in four seconds, not the textbook one. And study each word in a sentence you write yourself: a word you have put into your own context is one you actually own.

A 2-week method that makes vocabulary stick

Six weeks of vocabulary prep is overkill; two focused weeks is enough if you drill instead of reread. Two things carry the method: active recall (cover the answer, force your brain to produce it, then check) and spaced repetition (revisit a word right before you would forget it). Rereading a list feels productive but builds none of what the section tests — producing the meaning under time pressure. Build a deck of 100–150 words, write your own sentence for each, and run 20-minute sessions daily. Twenty focused minutes a day beats a four-hour Sunday panic every time.

The day-by-day sprint

• Days 1–2. Build the deck — group words by theme, write one sentence per word.

• Days 3–6. Learn one theme per day, active recall only: cover the definition, produce it, check.

• Days 7–8. Return to every word you missed — those are costing you points right now.

• Days 9–11. Switch to sentence-style practice, since the section tests words in context.

• Days 12–13. Mixed timed review — shuffle all themes together, because the real test is not sorted by category.

• Day 14. Light pass over your stubborn misses, then stop. A tired brain recalls worse than a rested one.

Two weeks fits inside a 60-day prep plan without crowding out math or science — which usually carry heavier section weight. The same review-loop method works across every section, and strong vocabulary directly helps reading comprehension too.

Practice: sample HESI A2 vocabulary questions

The format is consistent — a word in a sentence, four options, pick the closest meaning. Answer each before reading the explanation.

The nurse noted the patient’s abdomen was distended after surgery. "Distended" most nearly means:

• a) painful

• b) swollen

• c) bruised

• d) numb

Answer: b. Distended means swollen or stretched from internal pressure. The abdomen could also be painful, but that is not what the word means — do not let context bleed into the definition.

Aspirin is contraindicated for this patient. "Contraindicated" means the drug is:

• a) recommended

• b) delayed

• c) not advisable

• d) doubled

Answer: c. A contraindication is a reason something could cause harm. "Delayed" is the trap — the issue is safety, not timing.

The wound was excised by the surgeon. "Excised" means:

• a) cleaned

• b) cut out

• c) covered

• d) drained

Answer: b. Excise means to remove by cutting. The other options are all real wound-care steps, which is what makes them look plausible.

The child appeared lethargic during the exam. "Lethargic" most nearly means:

• a) anxious

• b) feverish

• c) sluggish

• d) cheerful

Answer: c. Lethargic means drowsy and low-energy. A feverish child might also be lethargic, but the question asks what the word means, not what else could be true.

The medication caused the blood vessels to dilate. "Dilate" means to:

• a) widen

• b) harden

• c) close

• d) bleed

Answer: a. Dilate means to open or widen; its opposite is constrict (to narrow). Learn the pair together — two definitions for the work of one.

Care shifted to a palliative approach. "Palliative" care aims to:

• a) cure the disease

• b) speed recovery

• c) ease symptoms

• d) prevent infection

Answer: c. Palliative care is comfort and symptom relief, not cure. People who miss this usually pick "cure" out of habit.

Frequently asked questions

How many vocabulary questions are on the HESI A2?

Around 50, though some administrations add a few unscored trial items so the on-screen total may be closer to 55. The exact count varies by school and updates over time — confirm with your program and check Elsevier’s current format.

Is HESI A2 vocabulary medical or general?

Both, but it tilts clinical. You will see academic words like exacerbate alongside terms like contraindication or distended. Learning basic medical word parts lets you decode the clinical ones even if you have never seen them.

What is the best way to study for the HESI A2 vocabulary section?

Group words by theme, use spaced repetition and active recall in short daily sessions, and practice words in sentences rather than definition-to-definition flashcards. Two focused weeks is usually enough — and avoid random Quizlet decks, since wrong definitions spread fast.

How many words should I actually memorize?

Around 100–150 grouped, high-yield words. Volume does not matter — recall does. A 100-word deck you can reproduce beats a 500-word list you have skimmed three times. Start with the themed table above, then add words you keep missing.

What score do I need on the HESI A2 vocabulary section?

There is no universal passing score. Your program sets its own cut score per section, and those vary widely. Ask your specific program, and do not rely on averages you find online.

Can I skip vocabulary if my program does not require it?

Yes — and you should. If your school’s HESI battery does not include vocabulary, studying it takes time away from sections that do count. Confirm your battery first, then study what is actually on your exam.

The bottom line

HESI A2 vocabulary is manageable. It leans clinical, so learn the word parts — roots, prefixes, suffixes — not just a list of definitions. Once you can break a term apart, unfamiliar clinical words stop being guesses. Do the step most people skip: confirm your school actually requires the section before spending time on it. Then run a tight, themed deck through two weeks of spaced repetition, practice words in context, and rest on day 14. When you are ready to map the whole plan, Testavia’s HESI A2 prep is built for the 60-day timeline most applicants are working with.