X-seam

noun

The distance from a person's lower back to the soles of their feet, measured from a sitting position with legs outstretched; used for sizing recumbent bicycles and ultralight aircraft.

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Meanings

nounX-seam (plural X-seams)

plural X-seams

  1. The distance from a person's lower back to the soles of their feet, measured from a sitting position with legs outstretched; used for sizing recumbent bicycles and ultralight aircraft.
Cite this entry
APA

X-seam. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/X-seam

MLA

“X-seam.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/X-seam. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “X-seam,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/X-seam.

Source: X-seam on Wiktionary, CC BY-SA 4.0.