isometric -
adj. 1 of equal measure.
2 Physiol. (of muscle
action) developing tension while the
muscle is prevented from contracting.
3 (of a drawing etc.) with the plane of projection at
equal angles to the three principal axes of the object shown.
4 Math. (of a transformation) without change of shape or size.
isometrically adv. isometry n. (in sense 4). [Gk isometria equality of measure (as ISO-, -METRY)]