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Measurement of the properties of light, especially luminous intensity.

pho′to·met′ric (fō′tə-mĕt′rĭk), pho′to·met′ri·cal (-rĭ-kəl) adj.
pho′to·met′ri·cal·ly adv.
pho·tom′e·trist n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adv.1.photometrically - by photometric means; "photometrically measured"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Diastase activity: It was measured photometrically, which was expressed in DN (diastase number), and corresponded to g starch hydrolysed/100 g honey / h, at pH 5.2 and T = 40[degrees]C, in Schade units (one diastase unit is the enzyme activity of 1 g of honey, which can hydrolyse 0.0 I g of starch in one hour at 40[degrees]C) (Vit & Pulcini, 1996).
Serum TC, HDL-C, LDL-C and TG levels were measured with Roche/Hitachi C501 instrument photometrically with the kits recommended by the instrument company.
Interns were also trained by the laboratory technician to use digital hemoglobinometer which measures hemoglobin level photometrically by causing lysis of red blood cell wall.
CRP values were determined photometrically. CRP values <6 mg/L were taken as normal.
Oxidized TMB can be measured photometrically at 450 nm.
The activity of cholinesterase is attained from the rate of colour pattern that is calculated photometrically.
In the presence of peroxidation, the hydrogen peroxide generated reacts with 4-aminoantipyrine, forming a purple-bluish dye that is directly proportional to cholesterol concentration and is measured photometrically.
The blood levels of total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), and TG were measured photometrically in an automatic analyzer (Cobas Integra 400, Roche, Mannheim, Germany).
The formaldehyde content is analysed photometrically using the acetylacetone (acac) method that is based on the Hantzsch reaction.
Total antioxidative status/capacity (TAS/TAC) was determined photometrically by an enzymatic reaction using a commercially available kit provided by Immundiagnostik AG (Bensheim, Germany).
The purity of the extracted RNA was tested photometrically, and the optical density (OD) at 260/280 nm was 1.8-2.0.