Hypodermic

google

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mid 19th century: from hypo- ‘under’ + Greek derma ‘skin’ + -ic.

wiktionary

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hypoderm +‎  -ic

etymonline

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hypodermic (adj.)

"pertaining to or relating to parts under the skin, subcutaneous; burrowing in or under the skin, introduced under the skin" 1830, from hypo- "under" + derma "skin" + -ic. Hypoderma is attested from 1826 as "tissue just beneath the skin."