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ectoderm
Definitions
[ˈɛktədəːm], (Noun)
Definitions:
- the outermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the epidermis, nerve tissue, and nephridia
Phrases:
Origin
:
mid 19th century: from ecto- ‘outside’ + Greek derma ‘skin’
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definition by Oxford Dictionaries