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Pertaining to the sense of hearing, the organs of hearing, or the science of sounds; auditory. Acoustic duct, the auditory duct, or external passage of the ear. -- Acoustic telegraph, a telegraph making audible signals; a telephone. -- Acoustic vessels, brazen tubes or vessels, shaped like a bell, used in ancient the…

In relation to sound or to hearing. Tyndall.

The science of sounds, teaching their nature, phenomena, and laws. Acoustics, then, or the science of sound, is a very considerable branch of physics. Sir J. Herschel.

A state of being acquainted; acquaintance. Southey.

f with much acrimony and indignation to baffle this senseless arrogant conceit of theirs. South.

The use of a picture symbol of an object to represent phonetically the initial sound of the name of the object.

The use of a picture symbol of an object to represent phonetically the initial sound of the name of the object.

move to action; to actuate; to animate. [Obs.] Self-love, the spring of motion, acts the soul. Pope.

An apparatus for the production of sound by the action of the actinic, or ultraviolet, rays.

Pertaining to, or causing the production of, sound by means of the actinic, or ultraviolet, rays; as, actinophonic phenomena.

The state of being actual; reality; as, the actuality of God's nature. South.

Put in action; actuated. [Obs.] South.

High, or shrill, in respect to some other sound; -- opposed to grave or low; as, an acute tone or accent.

Shrillness; high pitch; -- said of sounds.

pecies, A. digitata, the baobab or monkey-bread of Africa and India, and A. Gregorii, the sour gourd or cream-of-tartar tree of Australia. Both have a trunk of moderate height, but of enormous diameter, and a wide-spreading head. The fruit is oblong, and filled with pleasantly acid pulp. The wood is very soft, and the…

A dot at the right side of a note as an indication that its sound is to be lengthened one half. [R.]

r right of entrance; also, actual entrance; reception. To gain admittance into the house. South. He desires admittance to the king. Dryden. To give admittance to a thought of fear. Shak.

Hostile. [R.] Southey.

e it for us all if we bore prosperity as well and wisely as we endure an adverse fortune. Southey. Adverse possession (Law), a possession of real property avowedly contrary to some claim of title in another person. Abbott.

xpedient; prudent. Some judge it advisable for a man to account with his heart every day. South.