| 释义 | | genu-1 Knee; also angle. Oldest form *g̑enu‑, becoming *genu‑ in centum languages.
 [Pokorny 1. g̑enu‑ 380.]Variant form *gneu‑. knee, from Old English cnēo, knee, from Germanic *knewam;kneel, from Old English cnēowlian, to kneel, from Germanic *knewljan.
Basic form *genu‑.  geniculate, genuflect, from Latin genū, knee.O-grade form *gonu.  polygonum, pycnogonid, from Greek gonu, knee.Suffixed variant form *gōnw-yə‑.  -gon; amblygonite, diagonal, goniometer, orthogonal, from Greek gōniā, angle, corner.
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