CLEAVAGE n.
Division into laminæ, like slate, with the lamination not necessarily parallel to the plane of deposition; -- usually produced by pressure. Basal cleavage, cleavage parallel to the base of a crystal, or to the plane of the lateral axes. -- Cell cleavage (Biol.), multiplication of cells by fission. See Segmentation. -…
COMMISSION n.
ission (Naut.), to detach the officers and crew and retire it from active service, temporarily or permanently. -- To put the great seal, or the Treasury, into commission, to place it in the hands of a commissioner or commissioners during the abeyance of the ordinary administration, as between the going out of one lord…