isographn.
/ˈʌɪsə(ʊ)ɡrɑːf//ˈʌɪsə(ʊ)ɡraf/ 1. A drawing instrument (see quots.).
ΘΚΠ
society > communication > representation > a plastic or graphic representation > graphic representation > drawing plans or diagrams > [noun] > drawing instruments > other drawing instruments
perspectograph1818
isograph1838
diagraph1847
telemetrograph1885
1838 Civil Engineer & Architect's Jrnl. 1 349/1 These are a set of triangular rulers, drawing paper, with the lines and ellipses described upon it, and the isograph which consists of a number of rulers, made of brass or ivory, the fiducial edge of each being an inch apart, and parallel to each other.
1909 Webster's New Internat. Dict. Eng. Lang. Isograph, an instrument consisting of two short straightedges connected by a large circular joint marked with angular degrees, used with a T square on a drawing board and combining the functions of a protractor and a set square.
1926–7 Army & Navy Stores Catal. 456/1 Isograph. 12 in. boxwood, brass joint.
2. Linguistics. (See quots.)
ΘΚΠ
the mind > language > linguistics > other schools of linguistics > [noun] > linguistic geography or dialectology > isogloss > specific
isolex1921
isomorph1921
isophone1921
isograph1939
1939 L. H. Gray Found. Lang. ii. 26 Certain features of any one of the dialects will be common to some of the rest..so that it will be possible to draw upon a map lines indicating at least the approximate boundaries of these features... Such lines are termed isoglottic lines or isographs.
1954 M. A. Pei & F. Gaynor Dict. Linguistics 106 Isograph, any line on a linguistic map, indicating a uniformity in the use of sounds, vocabulary, syntax, inflexion, etc.
This entry has not yet been fully updated (first published 1976; most recently modified version published online March 2018).
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n.1838