residue
That which persists or remains following the removal or elimination of other elements.
The substance that remains after evaporation, distillation, filtration or any similar process.
A molecule that is released from a polymer after bonds between neighbouring monomers are broken, such as an amino acid in a polypeptide chain.
Whatever property or effects are left in an estate after payment of all debts, other charges and deduction of what is specifically bequeathed by the testator.
A representative element of an equivalence class modulo some base, conventionally in the half-open interval from zero to the base; the nonnegative remainder after dividing a number by a base.
A form of complex number, proportional to the contour integral of a meromorphic function along a path enclosing one of its singularities.

residues
plural of residue

resiniferatoxin
A naturally occurring ultrapotent capsaicin analogue (having in its pure form a Scoville heat unit measure of 16,000,000,000) that activates the receptor TRPV1 (aka vanilloid receptor 1 or the capsaicin receptor) in a subpopulation of primary afferent sensory neurons involved in nociception.

resistivities
plural of resistivity

resistivity
The resistance offered at a particular temperature by an electrical conductor of any given material in a cube of unit length, expressed in ohm-metres (Ωm) in the metric system of measurement.
The reciprocal of thermal conductivity, having SI unit: m K W⁻¹

respacings
plural of respacing

respiband
A band, worn around the wrist, that measures respiration

respibands
plural of respiband

responsivities
plural of responsivity

responsivity
A measure of responsiveness.
A measure of the gain of a system.

retagger
A criminal who fraudulently changes the serial numbers of automobiles.
A program or algorithm that updates or changes tags.

retaggers
plural of retagger

retainage
An amount of money held back from a payment as insurance against the work not being completed.

retainages
plural of retainage

reticle
A transparent plate marked with a crosshair, grid, or scale which is used in an optical instrument, etc., to aid in alignment, counting, or measurement of objects being observed; also, the crosshair, grid, or scale on such a plate.
A master or template, comprising a pattern of lines and shapes, used in photolithography to create the tiny integrated circuits on a microchip.
Alternative form of reticule (“a little bag”).

reticles
plural of reticle

retracter
Alternative form of retractor.

retracters
plural of retracter

retractor
One who, or that which, retracts.
In breech-loading firearms, a device for withdrawing a cartridge shell from the barrel.
A chess puzzle in which a number of moves are retracted and the solver is challenged to reach an alternate outcome.
A surgical instrument used to hold apart the edges of an incision or wound.
A bandage to protect soft parts of the body from injury by a surgical saw.
A muscle serving to draw in any part.

retractors
plural of retractor

retrorectus
The retrorectal area

rhabdophane
Any of a range of phosphate minerals containing varying amounts of several lanthanides

rhabdophanes
plural of rhabdophane

rhapontigenin
A stilbenoid, found in Vitis coignetiae, that inhibits the human cytochrome P450 1A1, an enzyme implicated in the biotransformation of a number of carcinogenic and immunotoxic compounds.

rhenium
A metallic chemical element (symbol Re) with an atomic number of 75: a heavy, silvery-gray transition metal.
A single atom of this element.

rheniums
plural of rhenium

rheochord
A wire that can measure or vary the resistance of an electric circuit, or measure the variability of the current.

rheochords
plural of rheochord

rheogoniometer
A type of rheometer that can be used to measure the viscous and elastic flow properties of a fluid, commonly called a Weissenberg Rheogoniometer.

rheogoniometers
plural of rheogoniometer

rhova
A second-order measure of derivative price sensitivity, expressed as the rate of change of vega with respect to changes in the risk-free interest rate, or equivalently the rate of change of rho with respect to changes in the volatility of the underlying asset.

rhumb
A line which crosses successive meridians at a constant angle.
Any of the 32 points of the compass.
A unit of angular measure equal to 1/32 of a circle or 11.25°.

rhumbline
Alternative spelling of rhumb line.

rhumblines
plural of rhumbline

rhumbs
plural of rhumb

rickburner
An arsonist who sets fire to hayricks.

rickburners
plural of rickburner

riksdaler
A unit of currency that was used in Sweden between 1777 and 1873.

riksdalers
plural of riksdaler

rimption
A large amount; plenty.

rimptions
plural of rimption

rimpull
The amount of tractive force located where the driving wheels contact the surface on which they travel.

rimpulls
plural of rimpull

ringfuls
plural of ringful

ringsful
plural of ringful

riplock
A deliberate slowdown in the transfer rate when reading data from a DVD, so as to reduce the amount of noise from the drive.

rng
An algebraic structure satisfying the same properties as a ring, except that multiplication need not have an identity element.

rngs
plural of rng

robocaller
The party that initiates a robocall.

robocallers
plural of robocaller

rockfall
A quantity of rocks that has fallen from a cliff etc.

rockfalls
plural of rockfall

roentgenium
A transuranic chemical element (symbol Rg) with atomic number 111.

rollsign
A roll of flexible material with route numbers or destinations, found on buses or trams.

rollsigns
plural of rollsign

romanescas
plural of romanesca

rondo
A musical composition, commonly of a lively, cheerful character, in which the first strain recurs after each of the other strains.
A small, disk-shaped piece of food, especially a single-serving dessert or small piece of candy.
A dark-skinned grape, a hybrid of Vitis vinifera with Vitis amurensis and others.
A game resembling keep-away, used to train soccer players: one group is tasked with completing a number of passes while the other smaller group tries to take possession of the ball.
A gambling game played with small balls on a table.

rondos
plural of rondo

ronnagram
An SI unit of mass equal to 10²⁷ grams. Symbol: Rg

ronnagramme
Alternative spelling of ronnagram.

ronnagrammes
plural of ronnagramme

ronnagrams
plural of ronnagram

ronnametre
An SI unit of length equal to 10²⁷ metres. Symbol: Rm

ronnametres
plural of ronnametre

ronnasecond
An SI unit of time equal to 10²⁷ seconds. Symbol: Rs. (= quintillions of years, a hypothetical time span that is meaningless except in speculative contexts such as theoretical physics, philosophy, religion, and humorous hyperbole)

ronnaseconds
plural of ronnasecond

rontogram
An SI unit of mass equal to 10⁻²⁷ grams. Symbol: rg

rontogramme
Alternative spelling of rontogram.

rontogrammes
plural of rontogramme

rontograms
plural of rontogram

rontosecond
An SI unit of time equal to 10⁻²⁷ seconds. Symbol: rs

rontoseconds
plural of rontosecond

rood
A crucifix, cross, especially in a church.
A measure of land area, equal to a quarter of an acre.
An area of sixty-four square yards.
A measure of five and a half yards in length.
The human face.

roods
plural of rood

roofful
A quantity that sits on a roof.

rooffuls
plural of roofful

roomfuls
plural of roomful

roomsful
plural of roomful

ropani
A unit of area equal to 5476 square feet or roughly 0.126 acres.

ropanies
plural of ropani

ropanis
plural of ropani

rotals
plural of rotal

rotarod
A rotating rod used to measure the balance, grip, and motor coordination of small laboratory animals.

rotarods
plural of rotarod

rotatores
A group of muscles that lie beneath the multifidus. Somewhat quadrilateral in form, they are present in all spinal regions but most prominent in the thoracic region; they are eleven in number on either side.