n.
Pronunciation: ˌ ä-bl ə - ' gä-( ˌ )t ō
Function: adjective
Etymology: Italian, obligatory, from past participle of obbligare to oblige, from Latin obligare ― more at OBLIGE
Date: 1794
: not to be omitted : OBLIGATORY ― used as a direction in music ― compare AD LIBITUM