assay

[ verb a-sey; noun as-ey, a-sey ]
/ verb æˈseɪ; noun ˈæs eɪ, æˈseɪ /

verb (used with object)

verb (used without object)

to contain, as shown by analysis, a certain proportion of usually precious metal.

noun

QUIZZES

CAN YOU FEEL THE WEAL WITH THIS WORD OF THE DAY QUIZ?

Did you collect all of last week’s words, but eftsoons forget what they mean? Don’t worry, we’re here to jog your memory. See how many words from the week of May 18 to 24 you can get right!
Question 1 of 7
weal

Origin of assay

1250–1300; Middle English < Middle French; variant of essay

OTHER WORDS FROM assay

as·say·a·ble, adjectiveas·say·er, nounun·as·sayed, adjectiveun·as·say·ing, adjective

WORDS THAT MAY BE CONFUSED WITH assay

assay essay
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for assayers

British Dictionary definitions for assayers

assay

verb (əˈseɪ)

noun (əˈseɪ, ˈæseɪ)

Derived forms of assay

assayable, adjectiveassayer, 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

Medical definitions for assayers

assay
[ ăsā′, ă-sā ]

n.

v.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for assayers

assay
[ ăsā, ə-sā ]

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.