Etymology
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Words related to angio-

angiogenesis (n.)
"development of new blood vessels," 1896, from angio- + -genesis "birth, origin, creation."
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angiogram (n.)

"X-ray image of the arteries, veins, and/or heart chambers," 1933, from angio- + -gram.

angiography (n.)
1731, "description of the vessels of the body" (blood and nymph), from angio- "blood vessel" + -graphy.
angioma (n.)
"tumor produced by enlargement or new formation of blood vessels," 1867, medical Latin, from angio- + -oma. Related: Angiomatous.
angiosperm (n.)
"plant with seeds contained in a protective vessel" (as distinguished from a gymnosperm, in which the seeds are naked), 1852, from Modern Latin Angiospermae, coined 1690 by German botanist Paul Hermann (1646-1695), from Greek angeion "vessel" (see angio-) + spermos, adjective from sperma "seed" (see sperm). So called because the seeds in this class of plants are enclosed. Related: Angiospermous.
hydrangea (n.)
1753, coined in Modern Latin by Linnaeus as a compound of Greek hydr-, stem of hydor "water" (from suffixed form of PIE root *wed- (1) "water; wet") + angeion "vessel, capsule" (see angio-); so called from the shrub's cup-shaped seed pods. Native to China, introduced in England 1790.
sporangium (n.)
"a case containing spores," 1821, Modern Latin (plural sporangia), from Greek spora "spore" (see spore) + angeion "vessel" (see angio-).
telangiectasia (n.)
1831, Modern Latin, from Greek telos "end" (see telos), + angeion "vessel" (see angio-), + ektasis "a stretching out, extension, dilation," from ek (see ex-) + tasis "a stretching, tension, intensity" (from PIE root *ten- "to stretch") + abstract noun ending -ia.