Meanings
Origin
From foil + fifty, from AC50; because it measures approximately 50 feet on the waterline, and uses hydrofoils, and is derived from the AC50 class.
Full word history & related roots →Cite this entry
F50. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/F50
“F50.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/F50. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “F50,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/F50.
Source: F50 on Wiktionary, CC BY-SA 4.0.