Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

acinus

play
noun ac·i·nus \ˈa-sə-nəs\

Definition of acinus

plural

acini

play \-ˌnī\

  1. :  any of the small sacs terminating the ducts of some exocrine glands and lined with secretory cells

acinous

\-nəs\ adjective

Explore M-W

ghost-being-disinvited-from-party
'Disinvite' or 'Uninvite'?
video-title-words-of-the-year-1066
Words of the Year: 1066
alt-5970fcc51169b
Trending: An Interview Full of 'Non sequiturs'
emoji-the-quiz
The Emoji Quiz

Origin and Etymology of acinus

New Latin, from Latin, berry, berry seed

Medical Dictionary

acinus

play play
noun aci·nus \ˈas-ə-nəs, ə-ˈsī-\

Medical Definition of acinus

plural

acini

\-ˌnī\play

  1. :  any of the small sacs or alveoli that terminate the ducts of some exocrine glands and are lined with secretory cells

Learn More about acinus

  1. Britannica.com: Encyclopedia article about acinus

Seen and Heard

What made you want to look up acinus? Please tell us where you read or heard it (including the quote, if possible).

show hide

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

crucible

play

a severe test

Get Word of the Day daily email!

TRENDING NOW

  1. non sequitur “It does not follow”

  2. admiral's mast A massive search ends with an 'admiral's mast'.

  3. calumny 'An untrue statement that is made to damage someone's reputation'

  4. kakistocracy Frustrated Twitter users have been searching for this word.

  5. bona fide Made in good faith

SEE ALL

BROWSE DICTIONARY

acinus

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

image386126722
Words and Phrases That Come from the Dinner Table

Fill your plate with these surprising food words

ghost-being-disinvited-from-party
'Disinvite' or 'Uninvite'?

A disinvited guest is an uninvited problem

alt-596f730ceb5ae
Words We're Watching: 'Scoby'

Kombucha lovers unite.

alt-596e1a928254c
Words We're Watching: 'Fidget Spinner'

Don't fight the fad

Ask the Editors

video-title-words-of-the-year-1066
Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

payday
How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless
Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals
Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

emoji-the-quiz
The Emoji Quiz

Think you’re an emoji 👓 expert? Let’s see 🤔

Take the quiz
image941935269
A Game of Thrones Word Quiz

In the Game of Thrones quiz, you learn some new vocabulary. (It’s quite safe, really. You will not die.)

Take the quiz
Name That Thing
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz
Add Diction
Add Diction

Build a chain of words by adding one letter at a time.

Play the game