Hatchling

Hatchling

In oviparous biology, a hatchling is the newborn of animals that develop and emerge from within hard-shell eggs. The offspring of birds are often hatched naked and with their eyes closed. The hatchling relies totally on its parents for feeding and warmth. Hatchlings precede nestlings in the chick's life cycle. The reptile hatchling is quite the opposite. Most baby reptiles are born with the same instincts as their parents and leave to live on their own immediately after birth.

In human medicine, a hatchling is the human young having emerged from the protective capsule (zona pellucida) provided by the human egg in a process called hatching. [Califorrniaa, E. "Method of monitoring the body temperature of human embryos and hatchlings." U.S. Patent No. [http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=6,694,175.PN.&OS=PN/6,694,175&RS=PN/6,694,175 6,694,175] . Feb. 17, 2004.]
[
baby hatching] Before hatching, the baby will grow a primitive spacesuit to provide protection after emerging from the egg capsule. The spacesuit is filled with chorionic fluid. The fluid-filled portion is also known as the blastocystic cavity. Upon implantation, the spacesuit grows to become the birth sac, umbilical cord, and the chorionic portion of the placenta. The discarded spacesuit emerges after birth as the afterbirth. The formal body of the baby hatchling was once crudely identified as the inner cell mass by developmental biologists, prior to awareness of the human hatching event. [Califorrniaa, E. "Vented microcradle for prenidial incubator." U.S. Patent No. [http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7,121,998.PN.&OS=PN/7,121,998&RS=PN/7,121,998 7,121,998] . Oct. 17, 2006.]

References


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Look at other dictionaries:

  • hatchling — (n.) 1854, from HATCH (Cf. hatch) (v.1) + dim. suffix LING (Cf. ling) …   Etymology dictionary

  • hatchling — ► NOUN ▪ a newly hatched young animal …   English terms dictionary

  • hatchling — [hach′liŋ] n. a recently hatched bird, fish, turtle, etc …   English World dictionary

  • hatchling — noun A newly hatched bird, reptile or other animal that has emerged from an egg. The hatchling alligator had just broken out of its shell but was already trying to follow its mother, who hunted hatchling birds …   Wiktionary

  • hatchling — noun Date: 1899 a recently hatched animal …   New Collegiate Dictionary

  • hatchling — fish larva just out of the egg …   Dictionary of ichthyology

  • hatchling — /hach ling/, n. a young bird, reptile, or fish recently emerged from an egg. [1895 1900; HATCH1 + LING1] * * * …   Universalium

  • hatchling — n. chick which has recently emerged from an egg …   English contemporary dictionary

  • hatchling — noun a newly hatched young animal …   English new terms dictionary

  • hatchling — hatch·ling …   English syllables

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