Article: quadrant
World Encyclopedia;      47 words ......plane geometry, a quarter of a circle, bounded by radii at right angles to each other and by the arc of the circle. In analytic...an x axis and a y axis. A quadrant is also a device for measuring angles, based on a 90° scale.

Article: arch-rib
A Dictionary of Architecture and Landscape Architecture;      11 words ...arch-rib. Vault-rib across a nave or aisle at right angles to the main axis.

Article: rhombus
World Encyclopedia;      26 words ...rhombus Plane figure with all of its sides equal in length but no right angles. A rhombus is a type of parallelogram whose diagonals bisect each other at right angles.

Article: diatropism
A Dictionary of Plant Sciences;      14 words ...diatropism A tropic response of a plant organ in which it grows at right angles to a stimulus.

Article: orthorhombic
A Dictionary of Earth Sciences;      44 words ...orthorhombic Applied to a crystal system where the Bravais lattices have three sets of edges at right angles, but all are of different lengths. They can be referred to three crystallographic axes , a , b , and c or x , y , and z , of unequal length and at right angles to each other.

Article: cross-banded
A Dictionary of Architecture and Landscape Architecture;      20 words ...cross-banded. Veneered, with the grain at right angles to the length of an object, especially the handrail of a stair - balustrade .

Article: gradient
A Dictionary of Earth Sciences;      19 words ...gradient In meteorology, the rate of change of a function (e.g. pressure or temperature), at right angles to the isolines.

Article: anticlinal
A Dictionary of Biology;      31 words ...anticlinal (in botany) At right angles to the surface of an organ or part. In anticlinal cell division the plane of division is at right angles to the surface of the plant body. Compare periclinal .

Article: T-square
The Oxford Pocket Dictionary of Current English;      16 words ...T-square (also T square ) • n. a T-shaped instrument for drawing or testing right angles. T-square

Article: cross-rib
A Dictionary of Architecture and Landscape Architecture;      15 words ...cross-rib. Transverse rib in a vault , i.e. at right angles to the main axis of a nave or aisle .

Article: diaphototropism
A Dictionary of Plant Sciences;      17 words ...diaphototropism A tropic response of a plant organ in which it grows at right angles to the stimulus of light.

Article: minor axis
A Dictionary of Astronomy;      13 words ...minor axis The shortest diameter of an ellipse, at right angles to the major axis .

Article: groin
A Dictionary of Architecture and Landscape Architecture;      18 words ...groin. Arris formed by the salient between two intersecting vaults , as in two barrel-vaults joined at right angles.

Article: squarrose
The Concise Oxford Dictionary of English Etymology;      19 words ...squarrose having scales. etc. standing out at right angles. XVIII. — L. squarrōsus scurfy, scabby; see -OSE1 .