Defn: Of, pertaining to, or resembling, trachyte.
TRACHYTOID
Trach"y*toid, a. Etym: [Trachyte + -oid.] (Min.)
Defn: Resembling trachyte; — used to define the structure of certain rocks.
TRACING
Tra"cing, n.
1. The act of one who traces; especially, the act of copying by marking on thin paper, or other transparent substance, the lines of a pattern placed beneath; also, the copy thus producted.
2. A regular path or track; a course. Tracing cloth, Tracing paper, specially prepared transparent cloth or paper, which enables a drawing or print to be clearly seen through it, and so allows the use of a pen or pencil to produce a facsimile by following the lines of the original placed beneath.
TRACK
Track, n. Etym: [OF.trac track of horses, mules, trace of animals; of
Teutonic origin; cf.D.trek a drawing, trekken to draw, travel, march,
MHG. trechen, pret. trach. Cf. Trick.]
1. A mark left by something that has passed along; as, the track, or wake, of a ship; the track of a meteor; the track of a sled or a wheel. The bright track of his fiery car. Shak.
2. A mark or impression left by the foot, either of man or beast; trace; vestige; footprint. Far from track of men. Milton.
3. (Zoöl.)