ortho-

Etymology
From.

Prefix



 * 1)  Right angle, perpendicular.
 * In this sense, it is the angle that is "right" or straight rather than the line; orthogon is a right-angle triangle, orthocentric is a tetrahedron where all three pairs of opposite edges are perpendicular, orthoclastic is a crystal whose cleavage planes are at right angles.
 * 1)  Proper, righteous, pure.
 * E.g. orthorexia is an unhealthy fixation with healthy or righteous eating, an orthotaxon is a true taxon based biological relationships rather than form, orthology is speech which is proper, orthoquartzite is very pure quartz sandstone.
 * 1)  To correct or fix.
 * E.g. orthophotography is the geometrical correction of aerial photographs, orthoptics is the treatment of muscular irregularities of the eye, orthodontics is the correcting of misaligned teeth.
 * 1)  Same, from the same.
 * E.g. An orthocousin, unlike a cross-cousin, is on the same side of the family; orthogamy is when a plant's ovules are fertilized by pollen from the same plant; orthochronous is a transformation which preserves the direction of time.
 * 1)  Normal, ordinary.
 * E.g. orthocclusion is normal occlusion, orthodromic is when neurological impulses are passed in the normal direction, orthogravitropism is the ordinary effect of gravity on plants
 * 1)  Straight in form.
 * E.g. orthoconic is a mollusc shell that is straight rather than spiraled, orthodentin is dentin composed of straight tubes, orthognathous is straight-jawed..
 * 1)   Orthorhombic crystal structure.
 * E.g. orthochrysotile is an orthorhombic chrysotile, orthopyroxene is a pyroxene that forms orthorhombic crystals, orthohexagonal is having orthorhombic hexagonal symmetry.
 * 1)   In isomeric benzene derivatives, having the two substituents in adjacent (1,2) positions (compare meta- and para-).
 * E.g. orthophenylene, orthosubstitution, orthocleavage.
 * 1)   Having an extra proportion of water.
 * E.g. orthophosphate, orthosilicate, orthoferrite.
 * 1)  Independent, separate.
 * E.g. orthogonal as in statistically independent, orthopair is a pair of disjoint subsets, orthogonal in the sense of two aspects of a software problem are able to be treated separately.
 * 1)  Original, primary.
 * E.g. orthonasal is the first direction from which olfaction happens; orthosteric is the original and unmodulated binding site; orthotone is when a speaker retains the accent.
 * 1)  Parallel lines or columns.
 * E.g. orthostyle is a series of columns in architecture, an ortholinear keyboard has the keys aligned in straight columns, an orthographic projection has its rays parallel.
 * 1)   Of any molecule of the form X2 in which the two nuclei have parallel spin.
 * E.g. orthopositronium, orthohelium, orthoquarkonium.
 * 1)   Orthopaedics.
 * E.g. orthogeriatrics is the combination of orthopaedics and geriatrics, orthosurgeon is an orthopaedic surgeon, orthoroentgenography is orthopedic roentgenography.
 * 1)  Vertical or upright in movement.
 * E.g. orthotropic is to grow vertically (up or down), orthostasis describes the state of the human body in a standing position, orthograde is walking or standing in that position.
 * 1)   Igneous.
 * E.g. orthogneiss is a gneiss derived from igneous, rather than sedimentary (paragneiss); orthoamphibolite, orthocumulate.

Derived terms




































Prefix

 * 1) right, proper
 * 2)  ortho-
 * 1)  ortho-

Etymology
From.

Prefix

 * 1) right