Dictionary.com

semaphore

[ sem-uh-fawr, -fohr ]
/ 藞s蓻m 蓹藢f蓴r, -藢fo蕣r /
Save This Word!

Definition of semaphore

noun
an apparatus for conveying information by means of visual signals, as a light whose position may be changed.
any of various devices for signaling by changing the position of a light, flag, etc.
a system of signaling, especially a system by which a special flag is held in each hand and various positions of the arms indicate specific letters, numbers, etc.
verb (used with or without object), sem路a路phored, sem路a路phor路ing.
to signal by semaphore or by some system of flags.
QUIZ
GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!
Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?

Origin of semaphore

First recorded in 1810鈥20; from French s茅maphore, from Greek s锚ma 鈥渟ign鈥; see -phore

OTHER WORDS FROM semaphore

sem路a路phor路ic [sem-uh-fawr-ik, -for-], /藢s蓻m 蓹藞f蓴r 瑟k, -藞f蓲r-/, sem路a路phor路i路cal, adjectivesem路a路phor路i路cal路ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, 漏 Random House, Inc. 2022

How to use semaphore in a sentence

British Dictionary definitions for semaphore

semaphore
/ (藞s蓻m蓹藢f蓴藧) /

noun
an apparatus for conveying information by means of visual signals, as with movable arms or railway signals, flags, etc
a system of signalling by holding a flag in each hand and moving the arms to designated positions to denote each letter of the alphabet
verb
to signal (information) by means of semaphore

Derived forms of semaphore

semaphoric (藢s蓻m蓹藞f蓲r瑟k) or semaphorical, adjectivesemaphorically, adverb

Word Origin for semaphore

C19: via French, from Greek s膿ma a signal + -phore
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition 漏 William Collins Sons & Co. Ltd. 1979, 1986 漏 HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK