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Any carnivorous mammal of the family Hyænidæ, of which three living species are known. They are large and strong, but cowardly. They feed chiefly on carrion, and are nocturnal in their habits. [Written also hyæna.]

than in chlorous compounds. Hypochlorous acid (Chem.), an acid derived from chlorine, not known in a pure state, but forming various salts, called hypochlorites.

cid, an acid, H2S2O6, obtained by the action of manganese dioxide on sulphur dioxide, and known only in a watery solution and in its salts; -- called also dithionic acid. See Dithionic.

Any animal of the genus Hyrax, of which about four species are known. They constitute the order Hyracoidea. The best known species are the daman (H. Syriacus) of Palestine, and the klipdas (H. capensis) of South Africa. Other species are H. arboreus and H. Sylvestris, the former from Southern, and the latter from Weste…

era, of the family Ibidæ, inhabiting both the Old World and the New. Numerous species are known. They are large, wading birds, having a long, curved beak, and feed largely on reptiles.

tic of the writings of Henrik Ibsen (1828-1906), Norwegian poet and dramatist, whose best-known plays deal with conventional hypocrisies, the story in each play thus developing a definite moral problem.

was considered sacred by the ancient Egyptians. The common species of India (H. griseus), known as the mongoose, has similar habits and is often domesticated. It is noted for killing the cobra.

sembling those of fishes. Several species, varying in length from ten to thirty feet, are known from the Liassic, Oölitic, and Cretaceous formations.

Unknown; undiscovered. [Obs.] Ignorant concealment. Shak. Alas, what ignorant sin have I committed Shak.

Unknown. [Obs.] Sir E. Sandys. -- n.

entire body. Its teeth resemble those of the iguana, whence its name. Several species are known, mostly from the Wealden of England and Europe. See Illustration in Appendix.

ven to earth, from earth to heaven, And as imagination bodies forth The forms of things unknown, the poet's pen Turns them to shapes, and gives to airy nothing A local habitation and a name. Shak.

To communicate the knowledge of; to make known; to show by words or tokens; to tell; to disclose. Gentle lady, When I did first impart my love to you. Shak.

An Indian crested pheasant of the genus Lophophorus. Several species are known. Called also monaul, monal.

A woman who is unknown or in disguise.

Without being known; in disguise; in an assumed character, or under an assumed title; -- said esp. of great personages who sometimes adopt a disguise or an assumed character in order to avoid notice. 'T was long ago Since gods come down incognito. Prior. The prince royal of Persia came thither incognito. Tatler.…

Not cognizable; incapable of being recognized, known, or distinguished. H. Spenser. The Lettish race, not a primitive stock of the Slavi, but a distinct branch, now become incognizable. Tooke.

s are wanting; or one in which the coefficient of some one or more of the powers of the unknown quantity is equal to 0.

ncapable of being conceived by the mind; not explicable by the human intellect, or by any known principles or agencies; incomprehensible; as, it is inconceivable to us how the will acts in producing muscular motion. It is inconceivable to me that a spiritual substance should represent an extended figure. Locke. -- In`c…

Not determinable; impossible to be determined; not to be definitely known, ascertained, defined, or limited. -- In`de*ter"mi*na*bly, adv.