CATKIN n.
An ament; a species of inflorescence, consisting of a slender axis with many unisexual apetalous flowers along its sides, as in the willow and poplar, and (as to the staminate flowers) in the chestnut, oak, hickory, etc. -- so called from its resemblance to a cat's tail. See Illust. of Ament.
CELLULAR a.
Consisting of, or containing, cells; of or pertaining to a cell or cells. Cellular plants, Cellular cryptogams (Bot.), those flowerless plants which have no ducts or fiber in their tissue, as mosses, fungi, lichens, and algæ. -- Cellular theory, or Cell theory (Biol.), a theory, according to which the essential elemen…
CEREBRO-SPINAL a.
Of or pertaining to the central nervous system consisting of the brain and spinal cord. Cerebro-spinal fluid (Physiol.), a serous fluid secreted by the membranes covering the brain and spinal cord. -- Cerebro-spinal meningitis, Cerebro-spinal fever (Med.), a dangerous epidemic, and endemic, febrile disease, characteri…