n. & v.
--n.
1. the testing of a metal or ore to determine its ingredients and quality.
2 Chem. etc. the determination of the content or strength of a substance.
--v.
1. tr. make an assay of (a metal or ore).
2 tr. Chem. etc. perform a concentration on (a substance).
3 tr. show (content) on being assayed.
4 intr. make an assay.
5 tr. archaic attempt.
Phrases and idioms:
Assay Office an establishment which awards hallmarks.
Derivatives:
assayer n.
Etymology: ME f. OF assaier, assai, var. of essayer, essai: see ESSAY