CR

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Cr,

symbol for the element chromiumchromium
[Gr.,=color], metallic chemical element; symbol Cr; at. no. 24; at. wt. 51.9961; m.p. about 1,857°C;; b.p. 2,672°C;; sp. gr. about 7.2 at 20°C;; valence +2, +3, +6. Chromium is a silver-gray, lustrous, brittle, hard metal that can be highly polished.
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Cr

(chemistry)

CR

(chemical engineering)

CR

1. Abbr. for cold-rolled.
2. Abbr. for “ceiling register.”

cross

cross, 3
1. An object consisting primarily of two straight or nearly straight pieces forming right angles with one another; the usual symbol of the Christian religion.
2. A monument or small building of any kind surmounted by a cross, 1, as a market cross.

CR

(1)

cr

(networking)
The country code for Costa Rica.

CR

(1) See cognitive radio and conversion rate.

(2) (Carriage Return) The character code generated when the Enter key is pressed. In ASCII and EBCDIC systems, the code is a decimal 13 or hex 0D. See line break.
References in periodicals archive ?
Provide participants with the tools and knowledge needed to evaluate and interpret nuchal translucency and crown-rump length measurements 6.
8 g pregnant adult female collected on 6 March that carried a single embryo with a crown-rump length of 18 mm.
There was a significant effect of pesticide dose on both newborn weight (ANCOVA, p = 0,061) and on crown-rump length (ANCOVA, p = 0.
Robinson HP: Sonar measurement of fetal crown-rump length as a means of assessing maturity in first trimester of pregnancy.
Relationship between crown-rump length and early detection of cardiac activity.
The fetus weighed 96 g and had a crown-rump length of 13.
The fetuses so obtained were examined for their respective crown-rump (CR) lengths with the help of osteometric board and measuring tape and body weights by electronic weighing machine.
Viability was 100% in 38 pregnancies in which fetal heart rates exceeded 100 beats per minute and embryos were determined to be growing appropriately at 5-6 weeks based on crown-rump length on ultrasound, explained Dr.
They measured fetal nasal bone length and crown-rump length and recorded maternal characteristics, including self-reported ethnic origin, age, weight, and diabetes.
TABLE 1 Age of the Embryo/fetus Crown-Rump length (C.
Level II evidence supports use of crown-rump length in the first trimester, which provides accurate dating and reduces the postdate risk to just 5%, in contrast to the 10%-15% rate with last menstrual period.
On 25 November 1986, a Llano pocket gopher (TCWC 53480) containing three fetuses with crown-rump lengths of about 18 mm was captured 16 mi S of Sabinal, Uvalde County, Texas.