M16

noun
\ ˌem-(ˌ)sik-ˈstēn How to pronounce M16 (audio) \

Definition of M16

: a .223 caliber (5.56 millimeter) gas-operated magazine-fed rifle for semiautomatic or automatic operation used by U.S. troops since the mid 1960s

First Known Use of M16

1968, in the meaning defined above

History and Etymology for M16

model 16

Learn More About M16

Dictionary Entries Near M16

M-1

M16

M1 rifle

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Statistics for M16

Cite this Entry

“M16.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/M16. Accessed 18 Aug. 2022.

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