trimerousadj.
/ˈtrɪmərəs/, /ˈtrʌɪmərəs/, U.S. /ˈtrɪmərəs/ Having, consisting of, or characterized by three parts: spec.
a. Botany. Having the parts of the flower, or the leaves, in series or whorls of three.
ΘΚΠ
the world > plants > part of plant > (defined by) distribution, arrangement, or position > [adjective] > occurring or arranged in twos, threes, etc.
tern1760
twin1812
ternary1830
trimerous1845
1845 J. Lindley School Bot. (1858) viii. 129 (note) Trimerous means that they [sc. parts of a flower] are a power of 3.
1857 A. Henfrey Elem. Course Bot. 226 Schizandraceæ..calyx and corolla 3-merous.
1869 Student 2 12 Polymerous leaves may be dimerous, trimerous, etc. according to their number of meriphylls.
1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 570 Among the dimerous and trimerous flowers of the orders Polycarpæ and Crucifloræ.
1957 Encycl. Brit. IX. 410/2 A flower in which the parts are arranged in twos is dimerous; in threes, fours or fives, trimerous, tetramerous or pentamerous respectively.
b. Entomology. Consisting of three segments or joints, as the tarsi in certain insects (see trimeran adj. and n. at Derivatives below); of an insect, having such tarsi (= trimeran adj. and n. at Derivatives).
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [adjective] > of leg(s) > of or relating to tarsus > consisting of three joints
trimerous1826
1826 W. Kirby & W. Spence Introd. Entomol. III. xxxv. 685 Trimerous insects are those whose tarsi consist of only three joints.
1826 W. Kirby & W. Spence Introd. Entomol. IV. xlvii. 378 Tarsi mostly trimerous, rarely dimerous.
Derivatives
trimeran adj. and n. /ˈtrɪmərən/ Entomology (a) adj. belonging to the division Trimera of beetles, or of hymenopterous insects, characterized by trimerous tarsi; (b) n. an insect of either of these divisions.
/ˈtrɪmərən/ Entomology (a) adj. belonging to the division Trimera of beetles, or of hymenopterous insects, characterized by trimerous tarsi; (b) n. an insect of either of these divisions.ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > leg(s) > tarsus > insect characterized by trimerous tarsi
trimeran1842
1842 W. T. Brande Dict. Sci., Lit. & Art 1262/2 Trimerans, Trimera, the name of a section of Coleopterous insects, including those which have each tarsus composed of three articulations.
trimere n. /ˈtraɪmɪə(r)/ Zoology a division of the third order in the supporting reticular skeleton of extinct siliceous sponges.
/ˈtraɪmɪə(r)/ Zoology a division of the third order in the supporting reticular skeleton of extinct siliceous sponges.ΘΚΠ
the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [noun] > member of > parts of > skeletal parts > division in skeleton
trimere1909
1909 Cent. Dict. Suppl. Trimere.
trimerite n. /ˈtrɪməraɪt/ Mineralogy a rare silicate of glucinum, manganese, and calcium, occurring in pinkish pseudo-hexagonal crystals, shown by their optical properties to be combinations of three triclinic individuals ( Cent. Dict. 1891).
/ˈtrɪməraɪt/ Mineralogy a rare silicate of glucinum, manganese, and calcium, occurring in pinkish pseudo-hexagonal crystals, shown by their optical properties to be combinations of three triclinic individuals ( Cent. Dict. 1891).ΘΚΠ
the world > the earth > minerals > types of mineral > silicates > miscellaneous silicates > [noun] > of glucinum and manganese
helvin1818
helvite1868
trimerite1896
1896 A. H. Chester Dict. Names Minerals 274 Trimerite, Silicate of glucinum, manganese, and calcium, found in brilliant pinkish crystals.
This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022).
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adj.1826