PRIMARY STANDARD

Domain	Definition
Aerospace	A unit directly defined and established by some authority, against which all secondary standards are calibrated, as the prototype kilogram. (references)
Environment	A pollution standard based on human health effects. Primary standards are set for criteria air pollutants. See also secondary standard. (references)
Source: compiled by the editor from various references; see credits.

Crosswords: PRIMARY STANDARD

Specialty definitions using "PRIMARY STANDARD": Faraday cup, Faraday cup detector ♦ manometer calibration ♦ secondary standard. (references)

Source: compiled by the editor from various references; see credits.

Frequency of Internet Keywords: PRIMARY STANDARD

The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com.

Anagrams: PRIMARY STANDARD

Scrabble® YAWL-Verified Anagrams
	Words within the letters "a-a-a-d-d-i-m-n-p-r-r-r-s-t-y"
	-4 letters: dynamitards, pantrymaids.
	-5 letters: dandiprats, dandyprats, dynamitard, pantrymaid.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.