DictionaryAI

formulæ

noun
USFOR-myuh-lee/ˈfɔɹ.mjə.li/UKFAW-myuu-lee/ˈfɔː.mjʊ.liː/

1 meaning of formulæ

Practice

  1. 1
    nounobsolete
    Plural of formula.

    The mathematician derived a set of formulæ describing planetary motion.

    Every page of the alchemist's manuscript was crowded with strange symbols and formulæ.

    Note

    A Latin plural kept in its old ligatured spelling: the -ae ending of a first-declension noun, printed as the single letter æ. Francis Baily's Astronomical Tables and Formulæ (1827) shows it at home in a scientific title. Today the spelling reads as archaic. Write formulae, or the regular English formulas, and keep æ only when quoting or reproducing an older text.

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