Definitions for: Phenomenal

[adj] exceedingly or unbelievably great; "the bomb did fantastic damage"; "Samson is supposed to have had fantastic strength"; "phenomenal feats of memory"
[adj] of or relating to a phenomenon; "phenomenal science"

Webster (1913) Definition: Phe*nom"e*nal, a. [Cf. F. ph['e]nom['e]nal.]
Relating to, or of the nature of, a phenomenon; hence,
extraordinary; wonderful; as, a phenomenal memory. --
Phe*nom"e*nal*ly, adv.

Synonyms: extraordinary, fantastic