periostracaladj.

Brit.

/ˌpɛrɪˈɒstrəkl/, U.S.

/ˌpɛriˈɑstrək(ə)l/

Origin: Formed within English, by derivation. Etymons: periostracum n., -al suffix¹.

Etymology: < periostracum n. + -al suffix¹.

Zoology.

Of or relating to the periostracum.

ΚΠ

1890 Cent. Dict. Periostracal, investing the shell of a mollusk, as an epidermis; of or pertaining to periostracum.

1948 Amer. Midland Naturalist 39 155 Very young and unworn shells bearing a pelage of short, slender, pointed, hair-like periostracal processes.

1990 Jrnl. Zool. 222 551 The periostracal groove lies between a narrow band of cuticularized columnar epithelium laterally and cells secreting new elements of the shell medially.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	periostracal
释义	periostracaladj. Brit. /ˌpɛrɪˈɒstrəkl/, U.S. /ˌpɛriˈɑstrək(ə)l/ Origin: Formed within English, by derivation. Etymons: periostracum n., -al suffix¹. Etymology: < periostracum n. + -al suffix¹. Zoology. Of or relating to the periostracum. ΚΠ 1890 Cent. Dict. Periostracal, investing the shell of a mollusk, as an epidermis; of or pertaining to periostracum. 1948 Amer. Midland Naturalist 39 155 Very young and unworn shells bearing a pelage of short, slender, pointed, hair-like periostracal processes. 1990 Jrnl. Zool. 222 551 The periostracal groove lies between a narrow band of cuticularized columnar epithelium laterally and cells secreting new elements of the shell medially. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < adj.1890
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