jugumn.
/ˈdʒuːɡəm/ Botany.
1.
a. A pair of leaflets in a pinnate leaf.
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the world > plants > part of plant > leaf > [noun] > leaflet > leaflets
winged clefts1776
jugum1857
1857 A. Henfrey Elem. Course Bot. 59 The pairs of leaflets [in pinnate leaves] are sometimes called juga, and if only one pair exists, the leaf is unijugate.
b. Each of the ridges on the carpels of Umbelliferæ.
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the world > plants > particular plants > plants and herbs > according to family > Umbelliferae (umbellifers) > [noun] > an umbellifer > parts of
vitta1830
band1845
jugum1880
1880 A. Gray Struct. Bot. 417/2 The ridges in the fruit of Umbelliferae are termed juga.
2.
a. Zoology. In certain brachiopods with hinged shells, a process of the dorsal valve.
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the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Brachiopoda > [noun] > member of > parts of
periosteum1758
periostracum1833
pallium1834
mantle cavity1853
adjustor1857
jugum1888
protegulum1891
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 693 One valve may have depression or sinuses to which correspond elevations or juga on the other.
1952 R. C. Moore et al. Invertebr. Fossils vi. 213/1 A variously shaped crossbar between the spiralia is called [the] jugum; it has considerable importance in classifying some groups of spine-bearing brachiopods.
b. Entomology. In certain Lepidoptera, a lobe on the fore wing which is able to link it to the hind wing.
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the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Lepidoptera or butterflies and moths > [noun] > parts of > jugum
jugum1893
1893 J. H. Comstock in Wilder Quarter-Century Bk. 43 There are two distinct ways of uniting the two wings of each side in the Lepidoptera; they may be united by a frenulum or..by a jugum.
1893 J. H. Comstock in Wilder Quarter-Century Bk. 84 In this genus [sc. Hepialis]..they [sc. the wings] are joined by a membranous lobe extending back from near the base of the inner margin of the fore wing. To this lobe I have applied the name jugum.
1895 E. Meyrick Handbk. Brit. Lepidoptera 5 A membranous or spine-like process called the jugum rises from the dorsum of the forewing near the base.
1911 Encycl. Brit. XVI. 466/1 In the most primitive moths a small lobate outgrowth—the jugum..—from the dorsum of the forewing is present.
Derivatives
ˈjugal adj.
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the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Lepidoptera or butterflies and moths > [adjective] > of parts > of jugal lobe
jugal1957
1957 O. W. Richards & R. G. Davies Imms's Gen. Textbk. Entomol. (ed. 9) 538 Wing-coupling apparatus of jugate type, the jugal lobe elongate and resting upon the hind wing.
1969 R. F. Chapman Insects x. 175 The Hepialidae have a strong jugal lobe which lies beneath the costal margin of the hind wing so that this is held between the jugum and the rest of the fore wing.
ˈjugate adj.
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the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Lepidoptera or butterflies and moths > [adjective] > of parts > of jugal lobe > having jugal lobe on fore wing
jugate1895
1895 J. H. Comstock & A. B. Comstock Man. Study Insects xviii. 215 This projecting lobe is named the jugum or yoke; and the moths possessing this organ are termed the Jugatæ or the Jugate Lepidoptera.
Draft additions 1997
Anatomy. A ridge or furrow connecting certain structures, esp. on bone. Chiefly in specific applications with (modern) Latin epithet, as juga alveolaria, jugum sphenoidale, etc.
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the world > life > the body > structural parts > bone or bones > skull > parts of skull > [noun] > socket of eye > parts of or associated with
eyebrow1583
meditullium1683
superciliary ridge1726
superciliary arch1733
supraorbital1797
lacrimal1822
suborbital1824
suborbitary1825
suborbitar1828
superciliary1831
eyebrow ridge1837
eye cap1837
orbitosphenoid1847
prefrontal1851
superorbital1854
jugum sphenoidale1887
ungual bone1888
the world > life > the body > structural parts > bone or bones > skull > parts of skull > [noun] > jawbones > upper > parts of or associated with
intermaxillary1834
canine fossa1835
canine ridge1835
intermaxilla1882
juga alveolaria1887
prosthion1901
the world > life > the body > structural parts > bone or bones > parts of bones > [noun] > connecting ridge or furrow
jugum1962
1887 L. Heitzmann tr. C. Heitzmann Anat. i. 23 Right superior maxillary bone... The alveolar process contains 8 alveoli for the reception of the teeth; its outer plate shows eminences, Juga alveolaria.
1893 J. B. Sutton in H. Morris Treat. Human Anat. i. 37 In the course of the first year the orbito-sphenoids fuse in the middle line to form the jugum sphenoidale, which excludes the anterior part of the pre-sphenoid from the cranial cavity.
1962 Gray's Anat. (ed. 33) 314 Anteriorly the jugum articulates with the posterior margin of the cribriform plate.
This entry has not yet been fully updated (first published 1901; most recently modified version published online June 2018).
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n.1857