Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

coccus

play
noun coc·cus \ˈkä-kəs\

Definition of coccus

plural

cocci

play \ˈkä-ˌkī, -ˌkē; ˈkäk-ˌsī, -ˌsē\
  1. :  a spherical bacterium

coccal

play \ˈkä-kəl\ adjective


Origin and Etymology of coccus

New Latin, from Greek kokkos


First Known Use: 1888


-coccus

noun combining form coc·cus

Definition of -coccus

plural

-cocci

  1. :  berry-shaped microorganism <micrococcus>



Origin and Etymology of -coccus

New Latin


COCCUS Defined for Kids

coccus

play
noun coc·cus \ˈkä-kəs\

Definition of coccus for Students

plural

cocci

\ˈkä-ˌkī, -ˌkē; ˈkäk-ˌsī, -ˌsē\
  1. :  a bacterium shaped like a ball




Medical Dictionary

coccus

play
noun coc·cus \ˈkäk-əs\

Medical Definition of coccus

plural

cocci

\ˈkäk-ˌ(s)ī also -(ˌ)(s)ē\play play
  1. 1:  a spherical bacterium

  2. 2:  cochineal




Learn More about coccus

  1. Medical Dictionary: Definition of coccus Britannica.com: Encyclopedia article about coccus


Seen and Heard

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

WORD OF THE DAY

a jerking and twitching of the body

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

two-chairs-on-a-pier-by-the-ocean-in-summer

Which of the following words means “of or relating to summer”?

hiemal brumal estival vernal
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ