TROPICAL a.
ar month, under Month. -- Tropic year, the solar year; the period occupied by the sun in passing from one tropic or one equinox to the same again, having a mean length of 365 days, 5 hours, 48 minutes, 46.0 seconds, which is 20 minutes, 23.3 seconds shorter than the sidereal year, on account of the precession of the e…
TUBULAR a.
cultation over the lungs in certain cases of disease, resembling that produced by the air passing through the trachea. -- Tubular bridge, a bridge in the form of a hollow trunk or tube, made of iron plates riveted together, as the Victoria bridge over the St. Lawrence, at Montreal, Canada, and the Britannia bridge ove…
VISUAL a.
.), a cone whose vertex is at the point of sight, or the eye. -- Visual plane, any plane passing through the point of sight. -- Visual point, the point at which the visual rays unite; the position of the eye. -- Visual purple (Physiol.), a photochemical substance, of a purplish red color, contained in the retina of…
VOYAGE n.
rly, a passage either by sea or land; a journey, in general; but not chiefly limited to a passing by sea or water from one place, port, or country, to another; especially, a passing or journey by water to a distant place or country. I love a sea voyage and a blustering tempest. J. Fletcher. So steers the prudent crane…