boutonn.
/ˈbuːtɒ̃/ 1. In pearl bouton, bouton pearl, anglicization of perle bouton, a round pearl with a flat back marking the place where it was attached to the shell.
ΘΚΠ
society > occupation and work > materials > raw material > gem or precious stone > pearl > [noun] > varieties of
unioOE
pearl of orientc1400
seed pearl1551
powdering pearls1606
pear pearl1647
Welsh pearl1681
peara1685
union1694
akoya1727
river pearl1776
orient1833
bouton pearl1851
blister pearl1885
Bombay pearl1885
teardrop pearl1904
cultured pearl1911
culture pearl1921
1851 Official Descriptive & Illustr. Catal. Great Exhib. III. 689 Brilliant tiara, ornamented with fine oriental pearl drops and boutons.
1907 Daily Chron. 5 Apr. 4/5 An exquisite pearl and brilliant necklace, formed as fifteen graduated drops, each composed of one bouton pearl, one brilliant, and one pear-shaped pearl drop.
1927 Daily Express 9 May 5/3 If it is a round pearl, with a flat back showing where it was attached to the shell, it will be called a ‘bouton’ pearl.
2. The button-like end of a honey-bee's tongue.
ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Hymenoptera > [noun] > suborder Apocrita, Petiolata, or Heterophaga > group Aculeata (stinging) > superfamily Apoidea (bees) > member of family Apidae (honey-bee) > button-like end of tongue
bouton1886
1886 F. R. Cheshire Bees & Bee-keeping I. 95 These central and side ducts run down to that part of the tongue where the spoon, or bouton, is placed.
Draft additions 1993
3. Anatomy. An enlarged part of a nerve fibre or cell, esp. an axon, where it forms a synapse with another nerve; bouton terminal (plural boutons terminaux), a single bouton at the tip of a nerve fibre; bouton de passage (plural boutons de passage), each of a series of boutons along the length of a nerve fibre.
ΘΚΠ
the world > life > the body > nervous system > substance of nervous system > [noun] > nerve fibre > specific part of
button1600
bouton1932
1918 Jrnl. Compar. Neurol. 30 153 I could not find any place where the contact between the ‘botones de traecto’ and the cell surface takes place, as was described..by Cajal.]
1932 Proc. Royal Soc. B. 111 176 In preparations of new-born kittens it is impossible to observe any boutons on any of the cells in the cord.
1932 Proc. Royal Soc. B. 111 176 The boutons terminaux are small, oblong loops occurring at the end of nerve fibres and applied to cell-bodies and their dendrites. The boutons de passage are similar structures..found along the length of the finest nerve fibres, on both cell- and dendrite-surfaces.
1937 A. Kuntz Text-bk. Neuro-Anat. (ed. 2) v. 99 Fiber terminations consisting of delicate end-bulbs or end-loops (boutons).
1970 T. S. Leeson & C. R. Leeson Histol. (ed. 2) x. 196/2 (caption) Photomicrograph of an anterior horn cell to show boutons terminaux on the cell body and its dendrites.
1970 Nature 4 Apr. 21/1 Dense granular vesicles probably containing dopamine are present in the terminal boutons of striatal nerve endings.
1985 C. R. Leeson et al. Textbk. Histol. (ed. 5) vii. 207/1 In some cases, telodendria with their boutons are so numerous as to surround the neuron on which they terminate in a basket-like arrangement.
Draft additions September 2018
Esp. in Aleppo bouton, Biskra bouton. The nodular, ulcerated sore that is the characteristic lesion of the protozoal disease cutaneous leishmaniasis, which is endemic in the Middle East, North Africa, and India; the disease itself; = oriental sore n. at oriental adj. and n. Compounds 2. Cf. button n. 7c. Now historical and rare. [In Aleppo bouton apparently after French bouton d'Alep (1780 or earlier).]
ΚΠ
1846 C. L. Meryon Trav. Lady H. Stanhope I. xvi. 351 It was not unlikely that the fear of the Aleppo bouton deterred Lady Hester from going also.
1863 Med. Times & Gaz. 14 Feb. 169/1 The ‘bouton’ of Aleppo, and the ‘bouton’ of Biskra, two endemic diseases of the skin which are still enveloped in much obscurity, are in all probability produced by the use of unwholesome drinking water.
1876 Brit. Med. Jrnl. 19 Feb. 226/1 Villemin mentions that the ‘boutons on the feet are sometimes multiple, simulating syphilitic ulcers’.
1902 Chambers's Jrnl. 22 Feb. 183/2 ‘Biskra bouton’ is endemic only in the filthy Algerian city from which it derives its name.
2012 Trav. Med. & Infectious Dis. 10 275/1 The cutaneous manifestation of this disease [sc. leishmaniasis] has a myriad of eponyms based on geographic regions, to include the ‘Aleppo evil’, the ‘Delhi boil’, and the ‘Biskra bouton’.
This entry has not yet been fully updated (first published 1933; most recently modified version published online September 2019).
<
n.1846