apocope

[uh-pok-uh-pee] /əˈpɒk əˌpi/
noun
1.
loss or omission of the last letter, syllable, or part of a word.
Origin
1585-95; < Late Latin < Greek apokopḗ a cutting off, equivalent to apokóp(tein) to cut off (apo- apo- + kóptein to cut) + noun suffix
Related forms
apocopic
[ap-uh-kop-ik] /ˌæp əˈkɒp ɪk/ (Show IPA),
adjective
British Dictionary definitions for apocope

apocope

/əˈpɒkəpɪ/
noun
1.
omission of the final sound or sounds of a word
Word Origin
C16: via Late Latin from Greek apokopē, from apokoptein to cut off