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The quantities or relations which are assumed to be given in any problem. Datum line (Surv.), the horizontal or base line, from which the heights of points are reckoned or measured, as in the plan of a railway, etc.

f large univalve mollusks abundant in the arctic seas. It includes the common whelk (B. undatum).

See Datum.

ble in foro externo, such as appointments to benefices. The name is derived from the word datum, given or dated (with the indications of the time and place of granting the gift or favor).

uth which is decisively attested or intuitively known as a psychological or philosophical datum; as, the deliverance of consciousness.

shabby parts of the establishment. W. Irving. Establishment of the port (Hydrography), a datum on which the tides are computed at the given port, obtained by observation, viz., the interval between the moon's passage over the meridian and the time of high water at the port, on the days of new and full moon.…

ndation. Hence: The foundation of knowledge, belief, or conviction; a premise, reason, or datum; ultimate or first principle; cause of existence or occurrence; originating force or agency; as, the ground of my hope.

A fern of the genus Adiantum (A. pedatum), having very slender graceful stalks. It is common in the United States, and is sometimes used in medicine. The name is also applied to other species of the same genus, as to the Venus-hair. Maiden grass, the smaller quaking grass. -- Maiden tree. See Ginkgo.…

ubtended at the sun by the semidiameter of the earth. It is 8."80, and is the fundamental datum.

A section of memory in a computer used for temporary storage of data, in which the last datum stored is the first retrieved.

f large marine gastropods belonging to Buccinum and allied genera; especially, Buccinum undatum, common on the coasts both of Europe and North America, and much used as food in Europe. Whelk tingle, a dog whelk. See under Dog.