| 释义 |
monogenic, a.|mɒnəʊˈdʒɛnɪk|
[f. Gr. µόνο-ς mono- + γέν-ος kind, origin (cf. -gen) + -ic.]
1. Geol. (See quot.) So F. monogénique.
1856Mayne Expos. Lex., Monogenicus, applied to a rock of which all the parts are of the same nature; thus the monogenic gompholite is a calcareous rock in a calcareous cement, more or less pure: monogenic.
2. Chem. Combining with an element in only one form; forming only one compound with a monovalent element.
1873Fownes' Chem. (ed. 11) 231 There are a few other monogenic elements.
3. Math. monogenic function: a function which has a differential coefficient; i.e. one whose rate of variation in any direction is independent of that direction by being independent of the mode of change of the variable.
1893Forsyth Theory of Functions 14 The idea of a monogenic function of a complex variable and the idea of dependence expressible by arithmetical operations are not coextensive. 1902H. F. Baker in Encycl. Brit. XXVIII. 539/1 A monogenic analytical function; the word monogenic having reference to the fact that various series, in x–c, x–c1, x–c11,{ddd}, which represent the function in different parts of the plane, have a single origin, namely, the series f(x), all the properties of the function being virtually continued in this one series.
4. Biol.
a. ‘Of or pertaining to monogenesis’ (Webster 1897).
b. (See quot.)
1894–1900G. M. Gould Dict. Med. (ed. 5), Monogenic, in biology, producing but one sort of embryo, as distinguished from diphygenic.
5. ‘Having a single origin;—applied to the human species’ (Webster Suppl. 1902).
6. Biol. [cf. genic a.] Involving or controlled by a single gene.
1939Jrnl. Genetics XXXVIII. 420 These results indicate that the asynaptic condition in N. sylvestris is determined by a difference which behaves as a monogenic recessive. 1960Phytopathology L. 766 (heading) Dominance of avirulence and monogenic control of virulence in race hybrids of Ustilago avenae. 1971Brit. Med. Bull. XXVII. 40/2 Conventional measurements of blood pressure are too variable to distinguish between monogenic and polygenic models of heredity.
Hence monoˈgenically adv.
1970Plant Disease Rep. LVI. 696 A true resistance mechanism which is monogenically controlled. |