
A sclerotome is part of a somite, a structure in vertebrate embryonic development. Sclerotomes eventually differentiate into the vertebrae and most of the skull. The caudal (inferior/lower) half of one sclerotome fuses with the rostral (superior/upper) half of the adjacent one to form each vertebra. From their initial location within the somite, t...
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http://en.wikipedia.org/wiki/Sclerotome

• (n.) One of the bony, cartilaginous, or membranous partitions which separate the myotomes.
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http://thinkexist.com/dictionary/meaning/sclerotome/

(from the article `animal development`) ...somite very early subdivides into two parts. The upper, dorsolateral part called the myotome remains compact, giving rise to the body muscles. The ... ...and superficial plaque, the dermatome, which gives rise to the integumentary tissue, (2) a deeper lateral mass, the myotome, which gives rise...
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http://www.britannica.com/eb/a-z/s/48

(sklēr´o-tōm) an instrument used in incision of the sclera. the area of a bone innervated from a single spinal segment. one of the paired masses of mesenchymal tissue, separated from the ventromedial part of a somite, which develop into vertebrae and ribs.
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http://www.encyclo.co.uk/local/21001
Scler'o·tome (sklĕr'o*tōm
or sklēr'o*tōm)
noun [ Greek
sklhro`s hard +
te`mnein to cut.]
(Zoology) One of the bony, cartilaginous, or membranous partitions which separate the myotomes. --
Scler`o*tom'ic adjec...Found on
http://www.encyclo.co.uk/webster/S/33

Type: Term Pronunciation: sklē′rō-tōm Definitions: 1. A knife used in sclerotomy. 2. The group of mesenchymal cells emerging from the ventromedial part of a somite and migrating toward the notochord. Sclerotomal cells from adjacent somites become merged in intersomitically located masses that are the primordia of the centra of ...
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http://www.medilexicon.com/medicaldictionary.php?t=80270

Greek skleros = hard, and tome = a cutting.
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https://www.encyclo.co.uk/local/21450
No exact match found.