‖n.; pl. Glabellæ [ NL., fr. L. glabellus hairless, fr. glaber bald. ] (Anat.) The space between the eyebrows, also including the corresponding part of the frontal bone; the mesophryon. -- Gla*bel"lar a. [1913 Webster]

‖n.; pl. Glabella [ NL. See Glabella. ] (Zool.) The median, convex lobe of the head of a trilobite. See Trilobite. [ 1913 Webster ]

a. [ L. glabrare, fr. glaber smooth. ] (Bot.) Becoming smooth or glabrous from age. Gray.

{ } v. t. [ See Glabrate. ] To make smooth, plain, or bare. [ Obs. ] [ 1913 Webster ]

n. [ L. glabritas. ] Smoothness; baldness. [ R. ] [ 1913 Webster ]

a. [ L. glaber; cf. Gr. &unr_; hollow, smooth, &unr_; to hollow. ] Smooth; having a surface without hairs or any unevenness. [ 1913 Webster ]

a. [ F., p.p. of glacer to freeze, to ice. Cf. Glacier. ] Smoothly coated with icing or crystals of sugar; iced; glazed; -- said of fruits, sweetmeats, cake, etc.
Syn. -- candied, crystalized, glacéed. [ Webster 1913 Suppl. + WordNet 1.5 ]

a. [ L. glacialis, from glacies ice: cf. F. glacial. ] 1. Pertaining to ice or to its action; consisting of ice; frozen; icy; esp., pertaining to glaciers; as, glacial phenomena. Lyell. [ 1913 Webster ]

2. (Chem.) Resembling ice; having the appearance and consistency of ice; -- said of certain solid compounds; as, glacial phosphoric or acetic acids. [ 1913 Webster ]

Glacial acid (Chem.), an acid of such strength or purity as to crystallize at an ordinary temperature, in an icelike form; as acetic or carbolic acid. --
Glacial drift (Geol.), earth and rocks which have been transported by moving ice, land ice, or icebergs; bowlder drift. --
Glacial epoch or
Glacial period (Geol.), a period during which the climate of the modern temperate regions was polar, and ice covered large portions of the northern hemisphere to the mountain tops. --
Glacial theory or
Glacial hypothesis. (Geol.) See Glacier theory, under Glacier. [ 1913 Webster ]

n. One who attributes the phenomena of the drift, in geology, to glaciers. [ 1913 Webster ]

v. t. 1. To convert into, or cover with, ice. [ 1913 Webster ]

2. (Geol.) To produce glacial effects upon, as in the scoring of rocks, transportation of loose material, etc. [ 1913 Webster ]

Glaciated rocks, rocks whose surfaces have been smoothed, furrowed, or striated, by the action of ice. [ 1913 Webster ]