INFINITESIMAL In`fin*i*tes"i*mal, a. Etym: [Cf. F. infinitésimal, fr. infinitésime infinitely small, fr. L. infinitus. See Infinite, a.]
Defn: Infinitely or indefinitely small; less than any assignable quantity or value; very small. Infinitesimal calculus, the different and the integral calculus, when developed according to the method used by Leibnitz, who regarded the increments given to variables as infinitesimal.
INFINITESIMAL
In`fin*i*tes"i*mal, n. (Math.)
Defn: An infinitely small quantity; that which is less than any assignable quantity.
INFINITESIMALLY
In`fin*i*tes"i*mal*ly, adv.
Defn: By infinitesimals; in infinitely small quantities; in an infinitesimal degree.
INFINITIVAL
In*fin`i*ti"val, a.
Defn: Pertaining to the infinite mood. "Infinitival stems." Fitzed.
Hall.
INFINITIVE
In*fin"i*tive, n. Etym: [L. infinitivus: cf. F. infinitif. See
Infinite.]
Defn: Unlimited; not bounded or restricted; undefined. Infinitive mood (Gram.), that form of the verb which merely names the action, and performs the office of a verbal noun. Some grammarians make two forms in English: (a) The simple form, as, speak, go, hear, before which to is commonly placed, as, to speak; to go; to hear. (b) The form of the imperfect participle, called the infinitive in -ing; as, going is as easy as standing.