- crown-rump length
- (CRL) the length of an embryo, fetus, or infant from the crown of the head to the breech; used in estimating the age of embryos from the fourth to the eighth week. It is the equivalent of sitting vertex height in older individuals.
Medical dictionary. 2011.
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Crown-rump length — An ultrasound showing a fetus measured to have a crown rump length of 1.67 cm, and estimated to have a gestational age of 8 weeks and 1 day Crown rump length (CRL) is the measurement of the length of human embryos and fetuses from the top of the… … Wikipedia
crown-rump length — noun : sitting height … Useful english dictionary
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greatest length — a dimension used to express the size of very young human embryos that have not yet developed the structures permitting measurement of crown rump length, as during the third week … Medical dictionary
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