Defn: A tax formerly paid to the kings of England for every hide of land. [Written also hydage.]

HIDALGO Hi*dal"go, n. Etym: [Sp., contr. fr. hijo de algo, i. e., son of something; hijo son (fr. LL. filius) + algo something, fr. L. aliquod. Cf. Fidalgo.]

Defn: A title, denoting a Spanish nobleman of the lower class.

HIDDEN
Hid"den, p. p. & a.

Defn: from Hide. Concealed; put out of view; secret; not known; mysterious. Hidden fifths or octaves (Mus.), consecutive fifths or octaves, not sounded, but suggested or implied in the parallel motion of two parts towards a fifth or an octave.

Syn. — Hidden, Secret, Covert. Hidden may denote either known to on one; as, a hidden disease; or intentionally concealed; as, a hidden purpose of revenge. Secret denotes that the thing is known only to the party or parties concerned; as, a secret conspiracy. Covert literally denotes what is not open or avowed; as, a covert plan; but is often applied to what we mean shall be understood, without openly expressing it; as, a covert allusion. Secret is opposed to known, and hidden to revealed. Bring to light the hidden things of darkness. 1 Cor. iv. 5. My heart, which by a secret harmony Still moves with thine, joined in connection sweet. Milton. By what best way, Whether of open war, or covert guile, We now debate. Milton.

HIDDENITE
Hid"den*ite, n. Etym: [After W. E. Hidden.] (Min.)

Defn: An emerald-green variety of spodumene found in North Carolina; lithia emerald, — used as a gem.

HIDDENLY
Hid"den*ly, adv.

Defn: In a hidden manner.