Structureless
71heredity — /heuh red i tee/, n., pl. heredities. Biol. 1. the transmission of genetic characters from parents to offspring: it is dependent upon the segregation and recombination of genes during meiosis and fertilization and results in the genesis of a new… …
72hyaline — n. /huy euh leen , lin/; adj. /huy euh lin, luyn /, n. 1. Also, hyalin /huy euh lin/. Biochem. a. a horny substance found in hydatid cysts, closely resembling chitin. b. a structureless, transparent substance found in cartilage, the eye, etc.,… …
73hyaloid membrane — the delicate, pellucid, and nearly structureless membrane enclosing the vitreous humor of the eye. [1825 35] * * * …
74hydra — /huy dreuh/, n., pl. hydras, hydrae / dree/ for 1 3, gen. hydrae / dree/ for 4. 1. (often cap.) Class. Myth. a water or marsh serpent with nine heads, each of which, if cut off, grew back as two; Hercules killed this serpent by cauterizing the… …
75meteorite — meteoritic /mee tee euh rit ik/, meteoritical, meteorital /mee tee euh ruyt l/, adj. /mee tee euh ruyt /, n. 1. a mass of stone or metal that has reached the earth from outer space; a fallen meteoroid. 2. a meteoroid. [1815 25; METEOR + ITE1] * * …
76nebula — nebular, adj. /neb yeuh leuh/, n., pl. nebulae / lee , luy /, nebulas. 1. Astron. a. Also called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula …
77nodule — /noj oohl/, n. 1. a small node, knot, or knob. 2. a small, rounded mass or lump. 3. Bot. a tubercle. [1590 1600; < L nodulus a little knot, equiv. to nod(us) NODE + ulus ULE] * * * In geology, a rounded mineral concretion that is distinct from,… …
78physics — /fiz iks/, n. (used with a sing. v.) the science that deals with matter, energy, motion, and force. [1580 90; see PHYSIC, ICS] * * * I Science that deals with the structure of matter and the interactions between the fundamental constituents of… …
79skin — skinlike, adj. /skin/, n., v., skinned, skinning, adj. n. 1. the external covering or integument of an animal body, esp. when soft and flexible. 2. such an integument stripped from the body of an animal, esp. a small animal; pelt: a beaver skin.… …
80South America — South American. a continent in the S part of the Western Hemisphere. 271,000,000; ab. 6,900,000 sq. mi. (17,871,000 sq. km). * * * Continent, Western Hemisphere. The world s fourth largest continent, it is bounded by the Caribbean Sea to the… …
