outer+covering
41seed coat — noun protective outer layer of seeds of flowering plants • Syn: ↑testa, ↑episperm • Derivationally related forms: ↑testaceous (for: ↑testa) • Hypernyms: ↑ …
42Seed — A seed Audio IPA|en us seed.ogg|/ˈsiːd/ (in some plants, referred to as a kernel) is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food. It is the product of the ripened ovule of gymnosperm and… …
43Adventitia — The outermost connective tissue covering of any organ, vessel, or other structure. For example, the connective tissue that surrounds an artery is called the adventitia because it is considered extraneous to the artery. Adventitia comes from the… …
44cuticle — 1. An outer thin layer, usually horny in nature. SYN: cuticula (1). 2. The layer, chitinous in some invertebrates, which occurs on the surface of epithelial cells. 3. SYN: epidermis. [L. cuticula, dim. of cutis, skin] acquired c …
45exoskeleton — Chitinous or calcified outer integument of crustaceans [McLaughlin, 1980]. Chitinous or calcined outer integument of body (pleurites, sternites, tergites) and appendages. See: endoskeleton [Stachowitsch, 1992]. Entire horny (in part chitinous)… …
46Empedocles — M.R.Wright INTRODUCTION Empedocles was a native of Acragas (Agrigento) in Sicily, a Doric colony founded on the south coast of the island in the sixth century BC, which soon grew to rival Syracuse in its prosperity. A line of temples, many of… …
47skin — I. noun Usage: often attributive Etymology: Middle English, from Old Norse skinn; akin to Old English scinn skin, Middle High German schint fruit peel Date: 13th century 1. a. (1) the integument of an animal (as a fur bearing mammal or a bird)… …
48Marsileaceae — Temporal range: Lower Cretaceous[1] to recent Pilularia (top) and Marsilea (bottom) …
49Eggshell — The term eggshell is a term for the outer covering of a hard shelled egg, and some forms of eggs with soft outer coats.The generalized eggshell structure, which varies widely among species, is a protein matrix lined with mineral crystals, usually …
50Hindenburg class airship — NOTOC Infobox Aircraft name= Hindenburg class caption= Hindenburg at NAS Lakehurst type=Passenger airship national origin=Germany manufacturer=Luftschiffbau Zeppelin designer=Ludwig Dürr first flight=4 March avyear|1936 introduced= retired=… …
