形容詞 geniculate:

1. bent at a sharp angle

ge.nic.u.late

adj.（形容詞）
Bent abruptly, as a knee.
膝狀彎曲的
Having kneelike joints; able to bend at an abrupt angle.
膝狀的：有膝狀關(guān)節(jié)的；能以較陡的斜度彎曲的

來源：
Latin genicul3tus [with bended knee]
拉丁語 genicul3tus [用彎曲的膝蓋]
from geniculum [diminutive of] genô [knee] * see genu-
源自 geniculum [] genô的小后綴 [膝蓋] *參見 genu-

【引伸】
genic.ulately
adv.（副詞）
genic.ula.tion
n.（名詞）