1. A dynamometer.

2. (Opt.)

Defn: An instrument for determining the magnifying power of telescopes, consisting usually of a doubleimage micrometer applied to the eye end of a telescope for measuring accurately the diameter of the image of the object glass there formed; which measurement, compared with the actual diameter of the glass, gives the magnifying power.

DYNAMETRICAL
Dy`na*met"ric*al, a.

Defn: Pertaining to a dynameter.

DYNAMIC; DYNAMICAL Dy*nam"ic, Dy*nam"ic*al, a. Etym: [Gr. durus hard, E. dure: cf. F. dynamique.]

1. Of or pertaining to dynamics; belonging to energy or power; characterized by energy or production of force. Science, as well as history, has its past to show, — a past indeed, much larger; but its immensity is dynamic, not divine. J. Martineau. The vowel is produced by phonetic, not by dynamic, causes. J. Peile.

2. Relating to physical forces, effects, or laws; as, dynamical
geology.
As natural science has become more dynamic, so has history. Prof.
Shedd.
Dynamical electricity. See under Electricity.

DYNAMICALLY
Dy*nam"ic*al*ly, adv.

Defn: In accordance with the principles of dynamics or moving forces.
J. Peile.