orbital index

noun

In the skull, the ratio of the vertical height to the transverse width of the orbit, multiplied by 100. The index can range from microseme to mesoseme to megaseme, although these terms are no longer used in literature.

Similar
OI
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Meanings

nounorbital index (plural orbital indexes or orbital indices)

plural orbital indexes · plural orbital indices

  1. anatomyIn the skull, the ratio of the vertical height to the transverse width of the orbit, multiplied by 100. The index can range from microseme to mesoseme to megaseme, although these terms are no longer used in literature.

    Synonyms: OI

Synonyms & antonyms

nounIn the skull, the ratio of the vertical height to the transverse width of the orbit, multiplied by 100. The index can range from microseme to mesoseme to megaseme, although these terms are no longer used in literature.

Similar
OI
Cite this entry
APA

orbital index. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/orbital%20index

MLA

“orbital index.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/orbital%20index. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “orbital index,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/orbital%20index.

Source: orbital index on Wiktionary, CC BY-SA 4.0.