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tion; serving to explain; explanatory; illustrative; exegetical. A glossary or expository index to the poetical writers. Johnson.

Expurgatory. [Obs.] "Expurgatorious indexes." Milton.

erroneous; cleansing; purifying. "Expurgatory animadversions." Sir T. Browne. Expurgatory Index. See Index Expurgatorius, under Index.

another (cd) from this point to the center of the external auditory opening. See Gnathic index, under Gnathic.

ct a painted or polished door from finger marks. -- Finger post, a guide post bearing an index finger. -- Finger reading, reading printed in relief so as to be sensible to the touch; -- so made for the blind. -- Finger shell (Zoöl.), a marine shell (Pholas dactylus) resembling a finger in form. -- Finger sponge (Zo…

the index mark [], used to direct special attention to the passage which follows. Hand over fist (Naut.), rapidly; hand over hand.

The finger next to the thumb; the index.

Of or pertaining to the jaw. Gnathic index, in a skull, the ratio of the distance from the middle of the nasofrontal suture to the basion (taken equal to 100), to the distance from the basion to the middle of the front edge of the upper jaw; -- called also alveolar index. Skulls with the gnathic index below 98 are orth…

The index of the hour circle of a globe.

An index or pointer on a dial; as, the hour or minute hand of a clock.

to mark differences of time in working problems on the globe. -- Hour hand, the hand or index which shows the hour on a timepiece. -- Hour line. (a) (Astron.) A line indicating the hour. (b) (Dialing) A line on which the shadow falls at a given hour; the intersection of an hour circle which the face of the dial. --…

A form of hygrometer having wet and dry bulb thermometers, with an adjustable index showing directly the percentage of moisture in the air, etc.

Indexical. [R.] Fuller.

The part of an instrument by which an effect is indicated, as an index or pointer.

Index; indication. [Obs.] B. Jonson.

See Index.

n. The symbol of an inverse operation is the symbol of the direct operation with -1 as an index. Thus sin-1 x means the arc whose sine is x. Inverse figures (Geom.), two figures, such that each point of either figure is inverse to a corresponding point in the order figure. -- Inverse points (Geom.), two points lying o…

er liquid intervening, or in bending a metallic or other spring so as to set in motion an index; a pressure gauge. See Pressure, and Illust. of Air pump.

Having the orbital index relatively large; having the orbits narrow transversely; -- opposed to microseme.

Having the jaws slightly projecting; between prognathous and orthognathous. See Gnathic index, under Gnathic.