crown-heel length


Also found in: Dictionary, Thesaurus, Legal, Acronyms, Encyclopedia.

length

 [length]
an expression of the longest dimension of an object, or of the measurement between its two ends.
crown-heel length (CHL) the distance from the crown of the head to the heel in embryos, fetuses, and infants; the equivalent of standing height in older persons.
Measuring an infant's crown-heel length. From Lammon et al., 1996.
crown-rump length (CRL) the distance from the crown of the head to the breech in embryos, fetuses, and infants; the equivalent of sitting height in older subjects.
cycle length in cardiac pacing terminology, the time interval in milliseconds from one event to the next; it is the inverse of the intrinsic rate (beats per minute) or the paced rate (pulses per minute).
focal length the distance between a lens and an object from which all rays of light are brought to a focus.

crown-heel length

(CHL) (krown-hēl length)
Length of an outstretched 8-week embryo or fetus from the vertex of the cranium to the heel.
See also: crown-rump length

crown-heel length

(krown-hēl length)
Length of an outstretched 8-week embryo or fetus from the vertex of the cranium to the heel.
See also: crown-rump length
References in periodicals archive ?
Updated gestational age specific birth weight, crown-heel length and head circumference of Chinese newborns.
The fetus weighed 58 g and had a crown-rump length of 8.7 cm, a crown-heel length of 11.9 cm, and a foot length of 1.2 cm.
For comparison, mean birth weights, crown-heel lengths and OFCs from some studies within and outside Nigeria are shown in Tables 5, 6 and 7.