Hyperbolic, or Napierian, logarithms, those logarithms (devised by John Speidell, 1619) of which the base is 2.7182818; — so called from Napier, the inventor of logarithms.Logisticor Proportionallogarithms., See under Logistic.

(Log`a*rith*met"ic Log"a*rith*met"ic*al) a. See Logarithmic.

(Log`a*rith*met"ic*al*ly), adv. Logarithmically.

(Log`a*rith"mic Log`a*rith"mic*al) a. [Cf. F. logarithmique.] Of or pertaining to logarithms; consisting of logarithms.

Logarithmic curve(Math.), a curve which, referred to a system of rectangular coördinate axes, is such that the ordinate of any point will be the logarithm of its abscissa.Logarithmic spiral, a spiral curve such that radii drawn from its pole or eye at equal angles with each other are in continual proportion. See Spiral.

(Log`a*rith"mic*al*ly), adv. By the use of logarithms.

(Log"-chip`) n. (Naut.) A thin, flat piece of board in the form of a quadrant of a circle attached to the log line; — called also log-ship. See 2d Log, n., 2.

(Log"cock`) n. The pileated woodpecker.

(Loge) n. [F. See Lodge.] A lodge; a habitation. [Obs.] Chaucer.

(Log"gan) n. See Logan.

(Log"gat) n. [Also written logget.]

1. A small log or piece of wood. [Obs.] B. Jonson.

2. pl. An old game in England, played by throwing pieces of wood at a stake set in the ground. [Obs.] Shak.

(Logge) n. & v. See Lodge. [Obs.] Chaucer.

(Logged) a. Made slow and heavy in movement; water-logged. Beaconsfield.

They were suggested by the celebrated German mathematician Karl Friedrich Gauss and are of great service in many astronomical computations. —

  By PanEris using Melati.

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