n.
Pronunciation: ' trip-t ə - ˌ fan
Variant: also tryp · to · phane \ - ˌ f ā n \
Function: noun
Etymology: International Scientific Vocabulary trypt ic + -o- + -phane
Date: 1890
: a crystalline essential amino acid C 11 H 12 N 2 O 2 that is widely distributed in proteins