planorbiconic

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adjective

Having a relatively flat spiral shell (intermediate between serpenticonic and spheroconic) in which the whorls touch (evolute to involute) and get larger as they get further from the center, causing the shell to have the profile of a mushroom when viewed from the side, without being so wide or involute that it is cadiconic.

“For quotations using this term, see Citations:planorbiconic.”

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Meanings

adjectiveplanorbiconic (comparative more planorbiconic, superlative most planorbiconic)

comparative more planorbiconic · superlative most planorbiconic

  1. biologyHaving a relatively flat spiral shell (intermediate between serpenticonic and spheroconic) in which the whorls touch (evolute to involute) and get larger as they get further from the center, causing the shell to have the profile of a mushroom when viewed from the side, without being so wide or involute that it is cadiconic.

    For quotations using this term, see Citations:planorbiconic.

Origin

From planorbicone + -ic.

Full word history & related roots →
Cite this entry
APA

planorbiconic. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/planorbiconic

MLA

“planorbiconic.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/planorbiconic. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “planorbiconic,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/planorbiconic.

Source: planorbiconic on Wiktionary, CC BY-SA 4.0.