A line drawn on a map connecting points of equal height.

synonym: contour line.

Roget 230: outline, circumference; perimeter, periphery, ambit, circuit, lines tournure^†, contour, profile, silhouette; bounds; coast line.    zone, belt, girth, band, baldric, zodiac, girdle, tyre [Brit.], cingle^†, clasp, girt; cordon etc. (inclosure) 232; circlet, etc. 247.    ... show more

Dutch: hoogtelijn
Polish: izolinia

Any spatial attributes (especially as defined by outline).

synonyms: configuration, conformation, form, shape.

Roget 240: form, figure, shape; conformation, configuration; make, formation, frame, construction, cut, set, build, trim, cut of one's jib; stamp, type, cast, mold; fashion; contour etc. (outline) 230; structure etc. 329; plasmature^†.    feature, lineament, turn; phase etc. (aspect) 448; posture, attitude, pose.    [Science of form] morphism.    [Similarity of form] isomorphism.    forming etc. v.; formation, figuration, efformation^†; sculpture; plasmation^†.    ... show more

Roget 448: appearance, phenomenon, sight, spectacle, show, premonstration^†, scene, species, view, coup d'oeil [Fr.]; lookout, outlook, prospect, vista, perspective, bird's-eye view, scenery, landscape, picture, tableau; display, exposure, mise en sc ne [Fr.]; rising of the curtain.    phantasm, phantom etc. (fallacy of vision) 443.    pageant, spectacle; peep-show, raree-show, gallanty-show; ombres chinoises [Sp.]; magic lantern, phantasmagoria, dissolving views; biograph^†, cinematograph, moving pictures; panorama, diorama, cosmorama^†, georama^†; coup de theatre, jeu de theatre [Fr.]; pageantry etc. (ostentation) 882; insignia etc. (indication) 550.    aspect, angle, phase, phasis^†, seeming; shape etc. (form) 240; guise, look, complexion, color, image, mien, air, cast, carriage, port, demeanor; presence, expression, first blush, face of the thing; point of view, light.    lineament feature trait lines; outline, outside; contour, face, countenance, physiognomy, visage, phiz.   , cast of countenance, profile, tournure^†, cut of one s jib, metoposcopy^†; outside etc. 220.    ... show more

Dutch: staat, fysiek, conditie, vorm, toestand, status, configuratie
Polish: forma, kształt

A feature (or the order or arrangement of features) of anything having a complex structure.

Form the contours of.