Isobar, ī′so-bär, n. an imaginary line connecting places on the earth where the mean height of the barometer at sea-level is the same.—adj. Isobaromet′ric, applied to lines denoting equal barometric pressure. [Gr. isos, equal, baros, weight.]
Isobathytherm, ī-so-bath′i-therm, n. a line connecting points of the same temperature in a vertical section of any portion of the ocean.—adjs. Isobathyther′mal, Isobathyther′mic. [Gr. isos, equal, bathys, deep, thermē, heat.]
Isobilateral, ī-so-bī-lat′e-ral, adj. (bot.) having the flanks of the organ flattened surfaces. [Gr. isos, equal, bilateral.]
Isobrious, ī-sob′ri-us, adj. growing equally in both lobes, of a dicotyledonous embryo.—Also Isodyn′amous. [Gr. isos, equal, brian, to be strong.]
Isobront, ī′so-bront, n. a line on a map connecting points at which a peal of thunder is heard simultaneously. [Gr. isos, equal, brontē, thunder.]
Isochasmic, ī-so-kaz′mik, adj. denoting equality as regards frequency of auroral displays. [Gr. isos, equal, chasma, a gap.]
Isocheimal, ī-so-kī′mal, adj. having the same mean winter temperature—also Isochei′menal.—n. I′socheim, an imaginary line connecting together those places where the mean winter temperature is the same. [Gr. isos, equal, cheima, winter.]
Isochoric, ī-so-kor′ik, adj. pertaining to equal volume or density. [Gr. isos, equal, chōra, space.]
Isochromatic, ī-so-krō-mat′ik, adj. (optics) having the same colour. [Gr. isos, equal, chrōma, colour.]
Isochronal, ī-sok′ron-al, adj. of equal time: performed in equal times—also Isoch′ronous.—n. Isoch′ronism, the quality of being isochronous or done in equal times.—adv. Isoch′ronously. [Gr. isochronos—isos, equal, chronos, time.]