The short answer
Prostate and prostrate differ by a single letter but mean completely unrelated things. Prostate is a noun naming a gland in the male reproductive system, as in a prostate exam. Prostrate is mainly an adjective or verb meaning lying flat, face down, or overwhelmed by exhaustion or grief. Swapping the two letters changes the sentence from medical to physical or emotional, so the mix-up is easy to spot once you know what to look for.
- Prostate: a gland, a noun
- Prostrate: lying face down, or overcome, an adjective or verb
What each word means
Prostate refers only to the small gland near the bladder in men that produces part of the fluid in semen. It appears almost always in medical or health contexts, such as a prostate screening or prostate cancer, and it is never used as a verb or to describe a body position. Doctors and health writers use prostate constantly, so it is worth learning to spell correctly on the first try.
Prostrate describes a body lying flat, usually face down, often from collapse, exhaustion, or deep emotion. Someone can be prostrate with grief, meaning overwhelmed to the point of being unable to stand. As a verb, to prostrate oneself means to lie down flat on purpose, often as a sign of submission, respect, or worship, and it can also describe someone weakened by illness or heat.
Why they get mixed up
The two words look nearly identical on the page, differing only in the order of the r and the missing second syllable break, and both are less common outside specific contexts. Because prostate appears mainly in health writing and prostrate mainly in literary or descriptive writing, most readers rarely see them side by side to compare, so the spelling slip goes unnoticed until it changes the meaning of a sentence, sometimes turning a medical appointment into something else entirely.
Prostate vs. prostrate in a sentence
His doctor recommended a prostate exam after his fiftieth birthday (not: his doctor recommended a prostrate exam). The runner collapsed, prostrate on the track after the final mile (not: the runner collapsed, prostate on the track). Grief left her prostrate on the floor of the kitchen for several minutes (not: grief left her prostate on the floor). Enlargement of the prostate is common in older men, and it is treated as a routine part of a checkup, unlike a prostrate collapse, which is sudden.
Remember it
Link prostate to a gland by noting that both words share a quiet, clinical sound, since gland and prostate both belong to medical vocabulary. Link prostrate to flat by the extra r, which you can picture as a person stretched out, arms wide, lying flat on the ground. If the sentence is about a body position or being overwhelmed, reach for the word with the extra r, and if it is about the male reproductive gland, drop that extra letter.
Frequently asked questions
What does prostrate mean?
It means lying face down or stretched out flat, often from collapse, exhaustion, grief, or as a gesture of submission.
Is the prostate only in men?
Yes, the prostate gland is part of the male reproductive system and has no equivalent structure in women.
Can prostrate describe emotions, not just posture?
Yes, prostrate can describe someone overwhelmed by grief, illness, or exhaustion, even if they are not literally lying down.
Try it with a real collection
Explore academic vocabulary or print a Frayer model to put these ideas into practice.