assay [ verb a- sey; noun as-ey, a- sey ] SHOW IPA / verb æˈseɪ; noun ˈæs eɪ, æˈseɪ / PHONETIC RESPELLING verb (used with object) to examine or analyze: to assay a situation; to assay an event. Metallurgy. to analyze (an ore, alloy, etc.) in order to determine the quantity of gold, silver, or other metal in it. Pharmacology. to subject (a drug) to an analysis for the determination of its potency or composition. to judge the quality of; assess; evaluate: to assay someone's efforts. to try or test; put to trial: to assay one's strength; to assay one's debating abilities. to attempt; try; essay: to assay a dance step. SEE MORE SEE LESS verb (used without object) to contain, as shown by analysis, a certain proportion of usually precious metal. noun Metallurgy. determination of the amount of metal, especially gold or silver, in an ore, alloy, etc. a substance undergoing analysis or trial. a detailed report of the findings in assaying a substance. Archaic. examination; trial; attempt; essay. SEE MORE SEE LESS QUIZZES QUIZ YOURSELF ON AFFECT VS. EFFECT!
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Origin of assay
1250–1300; Middle English <Middle French; variant of
essay OTHER WORDS FROM assay as·say·a·ble, adjective as·say·er, noun un·as·sayed, adjective un·as·say·ing, adjective WORDS THAT MAY BE CONFUSED WITH assay assay , essay
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for assay verb ( əˈseɪ) to subject (a substance, such as silver or gold) to chemical analysis, as in the determination of the amount of impurity (tr) to attempt (something or to do something) (tr; may take a clause as object) to test, analyse, or evaluate to assay the significance of early childhood experience SEE MORE SEE LESS noun ( əˈseɪ, ˈæseɪ) an analysis, esp a determination of the amount of metal in an ore or the amounts of impurities in a precious metal ( as modifier) an assay office a substance undergoing an analysis a written report on the results of an analysis a test SEE MORE SEE LESS Derived forms of assay assayable, adjective assayer, noun Word Origin for assay
C14: from Old Northern French
assai; see essay
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
n. Qualitative or quantitative analysis of a substance, especially of an ore or a drug, to determine its components. A substance to be so analyzed. The result of such an analysis. An analysis or examination. SEE MORE SEE LESS v. To subject a substance to chemical analysis. To examine a person's capability by trial or experiment; put to a test. To evaluate a situation; assess. To attempt; try. To be shown by analysis to contain a certain proportion of atoms, molecules, compounds, or precious metal. SEE MORE SEE LESS
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
A quantitative determination of the amount of a given substance in a particular sample. Assays are regularly used to determine the purity of precious metals. They can be performed by wet methods or dry methods. In the wet method, the sample is dissolved in a reagent, like an acid, until the purified metal is separated out. In the dry method, the sample is mixed with a flux (a substance such as borax or silica that helps lower the melting temperature) and then the sample is heated to the point where impurities in the metal fuse with the flux, leaving the purified metal as a residue. A bioassay.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.