monogenic, a.
(mɒnəʊˈdʒɛnɪk)
[f. Gr. µόνο-ς mono- + γέν-ος kind, origin (cf. -gen) + -ic.]
1. Geol. (See quot.) So F. monogénique.
| 1856 Mayne 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.
| 1873 Fownes' 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.
| 1893 Forsyth 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. 1902 H. 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.)
| 1894–1900 G. 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.
| 1939 Jrnl. Genetics XXXVIII. 420 These results indicate that the asynaptic condition in N. sylvestris is determined by a difference which behaves as a monogenic recessive. 1960 Phytopathology L. 766 (heading) Dominance of avirulence and monogenic control of virulence in race hybrids of Ustilago avenae. 1971 Brit. 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.
| 1970 Plant Disease Rep. LVI. 696 A true resistance mechanism which is monogenically controlled. |