noun The outermost whorl of flower parts, comprising the sepals, which covers and protects the petals as they develop.
noun Any of various cup-like structures. A chamber in the mammalian kidney through which urine passes. The crown containing the viscera of crinoids and similar echinoderms, entoprocts, and the polyps of some cnidarians. A funnel-shaped expansion of the vas deferens or oviduct of insects. A flattened cap of neuropil in the brain of insects.
noun A chamber in the mammalian kidney through which urine passes.
noun The crown containing the viscera of crinoids and similar echinoderms, entoprocts, and the polyps of some cnidarians.
noun A funnel-shaped expansion of the vas deferens or oviduct of insects.
noun A flattened cap of neuropil in the brain of insects.