propalinaladj.

Brit.

/prəʊˈpalᵻnl/, U.S.

/proʊˈpælən(ə)l/

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek πρό , πάλιν , -al suffix¹.

Etymology: Irregularly < ancient Greek πρό forward (see pro- prefix²) + πάλιν backward (see palinodia n.) + -al suffix¹. Compare proal adj., palinal adj.

Zoology and Palaeontology.

Characterized by or involving forward and backward motion, esp. of the lower jaw in chewing. Cf. palinal adj., proal adj.

ΚΠ

1888 E. D. Cope in Amer. Naturalist 22 7 The propalinal mastication is to be distinguished into the proal, from behind forwards,..and the palinal, from before backwards.

1953 Evolution 7 171/1 In this animal..the wear on the teeth implies a propalinal movement of the lower jaw.

1984 Amer. Mus. Novitates No. 2793. 1 Wear on the upper teeth indicates propalinal chewing.

1995 Palaeontol. 38 213 Propalinal movement was a major component of the grinding phase during oral food processing [in Edaphosaurus boanerges].

This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).

单词	propalinal
释义	propalinaladj. Brit. /prəʊˈpalᵻnl/, U.S. /proʊˈpælən(ə)l/ Origin: A borrowing from Greek, combined with an English element. Etymons: Greek πρό , πάλιν , -al suffix¹. Etymology: Irregularly < ancient Greek πρό forward (see pro- prefix²) + πάλιν backward (see palinodia n.) + -al suffix¹. Compare proal adj., palinal adj. Zoology and Palaeontology. Characterized by or involving forward and backward motion, esp. of the lower jaw in chewing. Cf. palinal adj., proal adj. ΚΠ 1888 E. D. Cope in Amer. Naturalist 22 7 The propalinal mastication is to be distinguished into the proal, from behind forwards,..and the palinal, from before backwards. 1953 Evolution 7 171/1 In this animal..the wear on the teeth implies a propalinal movement of the lower jaw. 1984 Amer. Mus. Novitates No. 2793. 1 Wear on the upper teeth indicates propalinal chewing. 1995 Palaeontol. 38 213 Propalinal movement was a major component of the grinding phase during oral food processing [in Edaphosaurus boanerges]. This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022). < adj.1888
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