Dictionary & Thesaurus

1.

(noun) the remains of a body part that was functional at an earlier stage of life; "Meckel's diverticulum is the rudiment of the embryonic yolk sac"

Related Words: body part

2.

(noun) the elementary stages of any subject (usually plural); "he mastered the rudiments of geometry"

Synonyms: first principle

Related Words: basic principle, basics, bedrock, fundamental principle, fundamentals