head margin

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head margin

[′hed ‚mär·jən]
(graphic arts)
The unprinted space left above the first line of printing on a page.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The French rider, who has been racing in Doha regularly since starting in the 2005-06 season, pulled off three of his wins by head or short head margins to wrap his thrilling day on the grassy tracks in New Al Rayyan.
Head tubercles surpassing the head margins by at least one third of their lengths (Figs.
Head margins moderately round along the whole length; pronotum 2.3 times as broad as long; hemelytraand connexivum, unicoloured, entirely black or dark brown without any yellow spots, 7- Lateral margins of head almost straight with seven upwardly directed spines, hemelytra reddish-brown with some scattered yellow patches; pronotum twice asbroad as long, with twelve spines; dorsoposterior cavityof male pygophore with broad, medially depressed projection, ventroposterior cavity medially notched and with sinuate margins, lateral lobes broad with apical margin a little depressed in middle, paramere stem short relatively narrow with very prominent conical-shapedinner process, blade thin long with apex acute.M.