nub theory

proper noun

The idea that the angle of the genital tubercle can be used to predict the sex of a fetus, an upward angle of at least 30° from the spine indicating a boy.

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Meanings

proper nounthe nub theory
  1. informalThe idea that the angle of the genital tubercle can be used to predict the sex of a fetus, an upward angle of at least 30° from the spine indicating a boy.
Cite this entry
APA

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

MLA

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

Chicago

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

Source: nub theory on Wiktionary, CC BY-SA 4.0.