an estimate, often itemized, of expected income and expense for a given period in the future. a plan of operations based on such an estimate. an itemized allotment of funds, time, etc., for a given period. the total sum of money set aside or needed for a purpose: the construction budget.
Kingdom Animalia, Phylum Cnidaria The phylum Cnidaria includes organisms with a variety of radially symmetrical forms; all are carnivores. The life cycle of some cnidarians includes both a medusa (jellyfish) stage and a polyp (attached) stage. Medusae are usually free-floating, and often produce gametes. Polyps are fleshy columns with an attachment at one end and a mouth and tentacles at the other end.
At the base of the tentacles is the mouth. Smaller animals which blunder into the tentacles are stung and paralyzed and drawn into the mouth. Most species of hydra are less than 0.6 inches (15 mm) in length, not including the tentacles, and are inconspicuous. Both column and tentacles are highly contractile and, by expelling gastrovascular fluid from the mouth, a hydra can shrink to a fraction of its previous volume.