VESTIGIAL
vestigial, rudimentary
(adjective) not fully developed in mature animals; “rudimentary wings”
Source: WordNet® 3.1
Etymology
Adjective
vestigial (not comparable)
Of or pertaining to a vestige or remnant; like a trace from the past.
Not fully developed in mature animals.
Noun
vestigial (plural vestigials)
(biology) A small, degenerate, or imperfectly developed part or organ which has been more fully developed in some past generation.
Anagrams
• vigilates
Source: Wiktionary
Ves*tig"i*al, a.
Definition: Of or pertaining to a vestige or remnant; like a vestige.
Source: Webster’s Unabridged Dictionary 1913 Edition