Webster's Dictionary 1913

3835

Photoprint

Pho″to‐print′ (?), n. Any print made by a photomechanical process.

3836

Photopsia

Pho‐top″si‐a (?), n. [NL., fr. Gr. φω̑σ, φωτόσ, light + � sight.] (Med.) An affection of the eye, in which the patient perceives luminous rays, flashes, coruscations, etc. See p...

3837

Photopsy

Pho‐top″sy (?), n. Same as Photopsia.

3838

Photorelief

Pho′to‐re‐lief″ (?), n. A printing surface in relief, obtained by photographic means and subsequent manipulations. Knight.

3839

Photoscope

Pho″to‐scope (?), n. [Photo- + -scope.] (Physics) Anything employed for the observation of light or luminous effects.

3840

Photoscopic

Pho′to‐scop″ic (?), a. Of or pertaining to the photoscope or its uses.

3841

Photosculpture

Pho′to‐sculp″ture (?), n. [Photo- + sculpture.] A process in which, by means of a number of photographs simultaneously taken from different points of view on the same level, rou...

3842

Photosphere

Pho″to‐sphere (?), n. [Photo- + sphere.] A sphere of light; esp., the luminous envelope of the sun.

3843

Photospheric

Pho′to‐spher″ic (?), a. Of or pertaining to the photosphere.

3844

Photosynthesis

Pho′to‐syn″the‐sis (?), n.(Plant Physiol.) The process of constructive metabolism by which carbohydrates are formed from water vapor and the carbon dioxide of the air in the chl...

3845

Phototaxis

{ ‖Pho′to‐tax″is (?), Pho″to‐tax′y (?) }, n. [NL. phototaxis; photo- + Gr. � an arranging.] (Biol.) The influence of light on the movements of low organisms, as various infusori...

3846

Phototelegraphy

Pho′to‐te‐leg″ra‐phy (?), n. Telegraphy by means of light, as by the heliograph or the photophone. Also, less properly, telephotography. — Pho′to‐tel″e‐graph (#), n. — Pho′to‐te...

3847

Phototelescope

Pho′to‐tel″e‐scope (?), n.(Astron.) A telescope adapted for taking photographs of the heavenly bodies.

3848

Phototheodolite

Pho′to‐the‐od″o‐lite (?), n. An arrangement of two photographic cameras, the plates of which may be brought into exactly the same plane, used in surveying and map making. From t...

3849

Phototherapy

Pho′to‐ther″a‐py (?), n.(Med.) The application of light for therapeutic purposes, esp. for treating diseases of the skin. — Pho′to‐the‐rap″ic (#), Pho′to‐ther′a‐peu″tic (#), a.

3850

Photothermic

Pho′to‐ther″mic (?), a. Of or pertaining to both light and heat.

3851

Phototonus

Pho‐tot″o‐nus (?), n. [NL. See Photo-, and Tone.] (Bot.) A motile condition in plants resulting from exposure to light. — Pho′to‐ton″ic (#), a.

3852

Phototonus (2)

Pho‐tot″o‐nus (?), n.(Physiol.) An irritable condition of protoplasm, resulting in movement, due to a certain intensity of light. — Pho′to‐ton″ic (#), a.

3853

Phototopography

Pho′to‐to‐pog″ra‐phy (?), n. Photogrammetry. — Pho′to‐top′o‐graph″ic (#), Pho′to‐top′o‐graph″ic‐al (#), a.

3854

Phototrichromatic

Pho′to‐tri′chro‐mat″ic (?), a. [Photo- + tri- + chromatic.] Designating a photomechanical process for making reproductions in natural colors by three printings.

3855

Phototropic

Pho′to‐trop″ic (?), a. [Photo- + Gr. � to turn.] (Bot.) Same as Heliotropic.

3856

Phototropism

Pho‐tot″ro‐pism (?), n. [Photo- + Gr. � to turn.] (Plant Physiol.) The tendency of growing plant organs to move or curve under the influence of light. In ordinary use the term i...

3857

Phototype

Pho″to‐type (?), n. [Photo- + -type.] A plate or block with a printing surface (usually in relief) obtained from a photograph; also, any one of the many methods of processes by ...

3858

Phototypic

Pho′to‐typ″ic (?), a. Of or pertaining to a phototype or phototypy.

3859

Phototypography

Pho′to‐ty‐pog″ra‐phy (?), n. [Photo- + typography.] Same as Phototypy.

3860

Phototypy

Pho‐tot″y‐py (?), n. The art or process of producing phototypes.

3861

Photovisual

Pho′to‐vis″u‐al (?), a.(Optics) Of certain achromatic lenses, having the same focus for the actinic and for the brightest of the visual rays.