1884, Prof. John Avery, “Notes from Oriental Periodicals” in The American Antiquarian and Oriental Journal, volume VI, ed. Stephen Denison Peet, Chicago: F.H. Reveell, № 1 (January 1884), ‘[Notes from the] Journal of the Anthropological Institute, August, 1883’, page 66:
We observe that languages differ greatly in their propensity to use abstract and concrete terms — some using the former freely, others the latter; and between the two extremes is every shade of intermediate usage. This tendency is best illustrated by terms of relationship; thus, in some languages parents call their children sons and daughters — abstract terms; in others they speak of them as male and female children — concrete terms. […] This peculiarity of expression [Dr. Gustav Oppert of Madras] has adopted as the basis of a classification of speech into abstract and concrete languages. […] Concrete languages are divided into heterologous, or those which contain special words, used when persons of different sex address each other; and homologous, or those in which both sexes use the same words. […] Abstract languages are classified under two heads, digenous and trigenous; that is to say, those which recognize two genders, and those which recognize three.
1918, International Review of the Science and Practice of Agriculture, Printing Office of the Institute, page 1467:
The author describes a “ trigenous ” female (“ Tschubataja ”) which does not contain ¼ cow's blood like the previous ones but ⅛. The head is, broadly speaking, like that of a female produced by the cross American bison X European bison.
1927, Arthur Edward Osmaston, A Forest Flora for Kumaon, Superintendent, Government Press, United Provinces, page xxxiii:
LXXI.—Polygonaceæ.—Herbs or shrubs. Leaves alternate, entire, stipules usually sheathing. Flowers small and usually bisexual. Perianth-segments 3-6, persistent. Stamens usually 5-8, opposite the perianth-segments. Ovary 1-celled, free, compressed or trigenous, ovule 1. Fruit a nut, enclosed in the perianth.
1936, Freerk Wit, Contributions to the genetics of the china aster, M. Nijhoff, page 82:
Simultaneously with the seed of the self-pollinated F2 plants, seed of the self-pollinated F1 plants was again sown; the trigenous segregation was here hardly to be observed. The figures of both segregations are given in the following table.
1956, Miscelánea de estudios dedicados a Fernando Ortiz (Volume 2), Sociedad Económica de Amigos del País, page 885:
According to the number of structural elements one may speak of digenous, trigenous, teatragenous, etc., movements. In addition one may distinguish between line movements and mixed movements; the former consisting exclusively of line members, the latter both of step and line members.
1967, Flora of the U.S.S.R., National Science Foundation, Washington, D.C., page 20:
Calyx much longer than the corolla, both rose-violet or rarely white; leaves 1.5-2.5 mm long, scalelike, trigenous, sagittate at base, sessile, imbricated in 4 series ... 1108. Calluna Salisb.
2006, Standardisation of Single Drugs of Unani Medicine (Part 4), Central Council for Research in Unani Medicine, Ministry of Health and Family Welfare, Government of India, page 210:
The inner surface of the seed coat is more smooth that the outer one. The wings are papery, light green and brittle when dried. The trigenous kernel is creamish coloured when young. The embryo is small and situated at one end of the cotyledons. The average weight of a single seed (ten seeds weighed separately) is 0.12g and the range of variation is 0.07 to 0.17g.
