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Retentor

A muscle which serves to retain an organ or part in place, esp. when retracted. See Illust. of Phylactolemata.

Retepore

Any one of several species of bryozoans of the genus Retepora. They form delicate calcareous corals, usually composed of thin fenestrated fronds.

Retex

To annual, as orders.

Retexture

The act of weaving or forming again.

Rethor

A rhetorician; a careful writer.

Retiarius

A gladiator armed with a net for entangling his adversary and a trident for despatching him.

Reticence

The quality or state of being reticent, or keeping silence; the state of holding one's tonque; refraining to speak of that which is suggested; uncommunicativeness.

Reticent

Inclined to keep silent; reserved; uncommunicative.

Reticular

Having the form of a net, or of network; formed with interstices; retiform; as, reticular cartilage; a reticular leaf.

Reticularia

An extensive division of rhizopods in which the pseudopodia are more or less slender and coalesce at certain points, forming irregular meshes. It includes the shelled Foraminifera, together with some groups which lack a true shell.

Reticulated Reticulate

Resembling network; having the form or appearance of a net; netted; as, a reticulated structure.

Reticulation

The quality or state of being reticulated, or netlike; that which is reticulated; network; an organization resembling a net.

Reticule

A little bag, originally of network; a woman's workbag, or a little bag to be carried in the hand.

Reticulose

Forming a network; characterized by a reticulated sructure.

Reticulum

The second stomach of ruminants, in which folds of the mucous membrane form hexagonal cells; -- also called the honeycomb stomach. The neuroglia.

Retiform

Composed of crossing lines and interstices; reticular; netlike; as, the retiform coat of the eye.

Retina

The delicate membrane by which the back part of the globe of the eye is lined, and in which the fibers of the optic nerve terminate. See Eye.

Retinaculum

A connecting band; a fraenum; as, the retinacula of the ileocaecal and ileocolic valves. One of the annular ligaments which hold the tendons close to the bones at the larger joints, as at the wrist and ankle.

Retinal

A retinoid compound (C20H28O), closely related to vitamin A, which is a component of the visual pigments in the eye. It is also called retinaldehyde and vitamin A aldehyde.

Retinalite

A translucent variety of serpentine, of a honey yellow or greenish yellow color, having a waxy resinlike luster.

Retineum

That part of the eye of an invertebrate which corresponds in function with the retina of a vertebrate.

Retinic

Of or pertaining to resin; derived from resin; specifically, designating an acid found in certain fossil resins and hydrocarbons.

Retinite

An inflammable mineral resin, usually of a yellowish brown color, found in roundish masses, sometimes with coal.

Retinoic acid

A retinoid compound (C20H28O2), closely related to vitamin A. It is also called tretinoin and vitamin A acid.

Retinoid

Resinlike, or resinform; resembling a resin without being such.

Retinol

A hydrocarbon oil C32H16, obtained by the distillation of resin, -- used as a solvent, as an antiseptic, and in printer's ink.

Retinophora

One of group of two to four united cells which occupy the axial part of the ocelli, or ommatidia, of the eyes of invertebrates, and contain the terminal nerve fibrillae. See Illust. under Ommatidium.

Retinoscopy

The study of the retina of the eye by means of the ophthalmoscope.

Retinue

The body of retainers who follow a prince or other distinguished person; a train of attendants; a suite.

Retinula

One of the group of pigmented cells which surround the retinophorae of invertebrates. See Illust. under Ommatidium.

Retiped

A bird having small polygonal scales covering the tarsi.

Retiracy

Retirement; -- mostly used in a jocose or burlesque way.

Retirade

A kind of retrenchment, as in the body of a bastion, which may be disputed inch by inch after the defenses are dismantled. It usually consists of two faces which make a reentering angle.

Retire

The act of retiring, or the state of being retired; also, a place to which one retires.

Retired

Private; secluded; quiet; as, a retired life; a person of retired habits.

Retirement

The act of retiring, or the state of being retired; withdrawal; seclusion; as, the retirement of an officer.

Retiring

Reserved; shy; not forward or obtrusive; as, retiring modesty; retiring manners.

Retistene

A white crystalline hydrocarbon produced indirectly from retene.

Retitelae

A group of spiders which spin irregular webs; -- called also Retitelariae.

Retort

The return of, or reply to, an argument, charge, censure, incivility, taunt, or witticism; a quick and witty or severe response.

Retortion

Act of retorting or throwing back; reflection or turning back.

Retouch

A partial reworking,as of a painting, a sculptor's clay model, or the like.

Retract

The pricking of a horse's foot in nailing on a shoe.

Retractation

The act of retracting what has been said; recantation.

Retractile

Capable of retraction; capable of being drawn back or up; as, the claws of a cat are retractile.

Retraction

The act of retracting, or drawing back; the state of being retracted; as, the retraction of a cat's claws.

Retractor

One who, or that which, retracts. In breech-loading firearms, a device for withdrawing a cartridge shell from the barrel. An instrument for holding apart the edges of a wound during amputation. A bandage to protect the soft parts from injury by the saw during amputation. A muscle serving to draw in any organ or part. See Illust. under Phylactolaemata.

Retranslate

To translate anew; especially, to translate back into the original language.

Retraxit

The withdrawing, or open renunciation, of a suit in court by the plaintiff, by which he forever lost his right of action.

Retreat

To make a retreat; to retire from any position or place; to withdraw; as, the defeated army retreated from the field.

Retreatment

The act of retreating; specifically, the Hegira.

Retrench

To cause or suffer retrenchment; specifically, to cut down living expenses; as, it is more reputable to retrench than to live embarrassed.

Retrenchment

The act or process of retrenching; as, the retrenchment of words in a writing.

Retrial

A secdond trial, experiment, or test; a second judicial trial, as of an accused person.

Retribute

To pay back; to give in return, as payment, reward, or punishment; to requite; as, to retribute one for his kindness; to retribute just punishment to a criminal.

Retributory Retributive

Of or pertaining to retribution; of the nature of retribution; involving retribution or repayment; as, retributive justice; retributory comforts.

Retrievable

That may be retrieved or recovered; admitting of retrieval.

Retroact

To act backward, or in return; to act in opposition; to be retrospective.

Retroactive

Fitted or designed to retroact; operating by returned action; affecting what is past; retrospective.

Retrocedent

Disposed or likely to retrocede; -- said of diseases which go from one part of the body to another, as the gout.

Retrochoir

Any extension of a church behind the high altar, as a chapel; also, in an apsidal church, all the space beyond the line of the back or eastern face of the altar.

Retroflexion

The act of reflexing; the state of being retroflexed. Cf. Retroversion.

Retrograde

To go in a retrograde direction; to move, or appear to move, backward, as a planet.

Retrogression

The act of retrograding, or going backward; retrogradation.

Retrogressive

Tending to retrograde; going or moving backward; declining from a better to a worse state.

Retromingent

Organized so as to discharge the urine backward. An animal that discharges its urine backward.

Retrospect

A looking back on things past; view or contemplation of the past.

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