Dilatation
The process of enlargement or expansion. For example, dilatation of the eye is the process by which the pupil is temporarily enlarged with special (mydriatic) eye drops. This allows the eye care specialist to better view the inside of the eye. The word "dilation" means the same thing as "dilatation". Both come from the Latin "dilatare" meaning "to enlarge or expand."
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SYN: dilation.
- digital d. use of the finger or finger-tip to enlarge an orifice or opening, such as enlarging the orifice of a sclerosed mitral valve surgically.

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di·la·ta·tion .dil-ə-'tā-shən, .dī-lə- n
1) the condition of being stretched beyond normal dimensions esp. as a result of overwork or disease or of abnormal relaxation <\dilatation of the heart> <\dilatation of the stomach>
2) DILATION (2)

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n.
the enlargement or expansion of a hollow organ (such as a blood vessel) or cavity.

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dil·a·ta·tion (dil″ə-taґshən) 1. the condition, as of an orifice or tubular structure, of being dilated or stretched beyond the normal dimensions. 2. dilation (def. 1).

Medical dictionary. 2011.

Synonyms:

Look at other dictionaries:

  • Dilatation — thermique Pour les articles homonymes, voir dilatation (homonymie). La dilatation est l expansion du volume d un corps occasionné par son réchauffement, généralement imperceptible. Dans le cas d un gaz, il y a dilatation à pression constante ou… …   Wikipédia en Français

  • dilatation — [ dilatasjɔ̃ ] n. f. • 1314; lat. dilatatio 1 ♦ Action de dilater; fait de se dilater. ⇒ gonflement, grossissement. La dilatation d un ballon, d un pneu qu on gonfle. (Organes) Mouvement de dilatation (⇒ diastole) et de contraction du cœur.… …   Encyclopédie Universelle

  • Dilatation — (von lateinisch dilatare ‚verlängern, ausdehnen, vergrößern‘) steht für: Chemie: die Veränderung des Volumens eines Körpers durch Änderung von Druck, Temperatur oder anderen Zustandsgrößen, siehe auch Dilatation (Chemie) Physik: eine… …   Deutsch Wikipedia

  • Dilatation — Dil a*ta tion, n. [OE. dilatacioun, F. dilatation, L. dilatatio, fr. dilatare. See {Dilate}, and cf. 2d {Dilation}.] 1. Prolixity; diffuse discourse. [Obs.] What needeth greater dilatation? Chaucer. [1913 Webster] 2. The act of dilating;… …   The Collaborative International Dictionary of English

  • dilatation — DILATATION. sub. f. Extension, relâchement. La dilatation d une membrane. La dilatation d une plaie, de l air …   Dictionnaire de l'Académie Française 1798

  • dilatation — Dilatation. s. f. v. Extension, relaschement. La dilatation d une membrane. la dilatation d une playe …   Dictionnaire de l'Académie française

  • dilatation — c.1400, from O.Fr. dilatation, from L.L. dilatationem (nom. dilatatio) a widening, from pp. stem of L. dilatare (see DILATE (Cf. dilate)) …   Etymology dictionary

  • dilatation — dilatation, dilation mean ‘making or becoming wider’ (from Latin latus meaning ‘wide’). Dilatation is the normal word in medical contexts, whereas dilation is more usual in general use. The verb is dilate …   Modern English usage

  • dilatation — [dil΄ə tā′shən, dīl΄ətā′shən] n. [ME dilatacioun < OFr dilatation < LL dilatatio] 1. DILATION 2. Med. the state of enlargement of an organ, cavity, duct, or opening of the body beyond normal size: cf. DILATION dilatational adj …   English World dictionary

  • dilatation — index extension (expansion) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • Dilatation — Dilatation, Weitung des Cambiumrings beim sekundären Dickenwachstum; geschieht durch tangentiale Teilungen und Bildung von radialen Zellwänden …   Deutsch wörterbuch der biologie

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