umbonaladj.

/ˈʌmbəʊnəl/

Etymology: < Latin umbōn-, umbo umbo n. + -al suffix¹.

Of, belonging to, situated near, the umbo; of the nature of an umbo.

ΚΠ

1854 S. P. Woodward Man. Mollusca ii. 316 Shell smooth, oblong;..umbonal rib extending across the interior of the valve.

1866 R. Tate Plain & Easy Acct. Mollusks Great Brit. ii. 12 In the interior of the shell, the following..are to be distinguished: The umbonal cavity corresponding to the umbo [etc.].

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 124 A line..drawn to the ventral margin from the centre of the umbonal region.

This entry has not yet been fully updated (first published 1921; most recently modified version published online March 2019).

单词	umbonal
释义	umbonaladj. /ˈʌmbəʊnəl/ Etymology: < Latin umbōn-, umbo umbo n. + -al suffix¹. Of, belonging to, situated near, the umbo; of the nature of an umbo. ΚΠ 1854 S. P. Woodward Man. Mollusca ii. 316 Shell smooth, oblong;..umbonal rib extending across the interior of the valve. 1866 R. Tate Plain & Easy Acct. Mollusks Great Brit. ii. 12 In the interior of the shell, the following..are to be distinguished: The umbonal cavity corresponding to the umbo [etc.]. 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 124 A line..drawn to the ventral margin from the centre of the umbonal region. This entry has not yet been fully updated (first published 1921; most recently modified version published online March 2019). < adj.1854
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