אֲלַכְסוֹן, (adv.) athwart, crosswise. Tosef. Kel. B. Mets. VIII, 5 two feet &c. of a bed cut off א׳ crosswise; (Kel. XVIII, 5 לוכסן).
אֲלַכְסוֹן, אֲלַכְסוֹן, ch. form אֲלַכְסוֹנָא m. diagonal line, diameter. B. Bath. 101ᵇ; Succ. 8ᵃ כל אמתא … באלכסונָהּ a figure of one square cubit has a diagonal line of 12/5 cubits (approximately). Men. 35ᵃ; Meg. 24ᵇ must be square בתפרן ובאֲלַכְסוֹנָן both as to their seams (not warped) and as to the measure of their diagonal lines. Erub. 59ᵃ מידת העיר ואלכסונָהּ Ms. K. (ed. בא׳, v. Rashi a. l.) the measure of the circumference of the town plus its diameter. B. Bath. 99ᵃ ודילמא בא׳ הוו קיימי perhaps the Cherubim in the Sanctuary were placed across the room; a. fr.