| quamash | <botany> See Camass. Source: Websters Dictionary (01 Mar 1998) |
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| quamoclit | <botany> Formerly, a genus of plants including the cypress vine (Quamoclit vulgaris, now called Ipomoea Quamoclit). The genus is now merged in Ipomoea. Origin: Gr. A bean + to bend, to slope. Source: Websters Dictionary (01 Mar 1998) |
| quandong | <botany> The edible drupaceous fruit of an Australian tree (Fusanus acuminatus) of the Sandalwood family. Synonym: quandang. Source: Websters Dictionary (01 Mar 1998) |
| quandy | <zoology> The old squaw. Origin: Etymol. Uncertain. Source: Websters Dictionary (01 Mar 1998) |
| Quant's sign | <clinical sign> A T-shaped depression in the occipital bone occurring in many cases of rickets, especially in infants lying constantly in bed with pressure on the occiput. (05 Mar 2000) |
| quanta | Plural of quantum. Origin: L. (05 Mar 2000) |
| quantal mitosis | A controversial concept in cellular differentiation proposed by H. Holtzer and defined by him as a mitosis that yields daughter cells with metabolic options very different from those of the mother cell as opposed to proliferative mitoses in which the daughter cells are identical to the mother cell. Implicit in this is the idea that the changes in cell determination that occur during development take place at these special quantal mitoses. (18 Nov 1997) |
| quantasome | <cell biology> Smallest structural unit of photosynthesis, a particulate component of the thylakoid membrane containing chlorophyll and cytochromes. Origin: Gr. Soma = body (18 Nov 1997) |
| quantic | <mathematics> A homogeneous algebraic function of two or more variables, in general containing only positive integral powers of the variables, and called quadric, cubic, quartic, etc, according as it is of the second, third, fourth, fifth, or a higher degree. These are further called binary, ternary, quaternary, etc, according as they contain two, three, four, or more variables; thus, the quantic is a binary cubic. Origin: L. Quantus how much. See Quantity. Source: Websters Dictionary (01 Mar 1998) |
| quantify | To express as a numerical amount. (09 Oct 1997) |
| quantile | Division of a distribution into equal, ordered subgroups; deciles are tenths, quartiles are quarters, quintiles are fifths, terciles are thirds, centiles are hundredths. Origin: L. Quantum, how much, + -ilis, adj. Suffix (05 Mar 2000) |
| quantitative | Denoting or expressible as quantity, relating to the proportionate quantities or to the amount of the constituents of a compound. Origin: L. Quantitativus (18 Nov 1997) |
| quantitative alteration | In electric irritability, a gradual loss of contractility in a muscle in response to static, faradic, and galvanic currents successively. (05 Mar 2000) |
| quantitative analysis | Determination of the amount, as well as the nature, of each of the elements composing a substance. (05 Mar 2000) |
| quantitative genetics | The formal study of measurable genetic traits, traditionally but not necessarily confined to galtonian genetics. (05 Mar 2000) |