variants:
or Capcom or less commonly CapCom or CAPCOM
plural capcoms or Capcoms also CapComs or CAPCOMs
Definition of capcom
: a member of the ground support staff for a crewed space mission who is responsible for communicating via radio with the crew during the mission
All the astronauts chosen as capcoms automatically become members of a flight's support team, attending training sessions and computer-simulated practice flights along with the actual crew.— Susan Okie
Keep scrolling for more
Test Your Vocabulary
Slippery Words Quiz—Changing with the Times
- What is an earlier meaning of nice?

Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
Spell words. Make bears.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Slippery Words Quiz—Changing with the Times
Do you know these earlier meanings of words?
Take the quizWords of Snow and Ice Quiz
A selection of words from the chillier parts of t...
Take the quizHow Strong Is Your Vocabulary?
Test your vocabulary with our 10-question quiz!
Take the quizPlay the game
Share capcom
Time Traveler for capcom
The first known use of capcom was in 1961
See more words from the same year