irrumatio
Alternative form of irrumation.

irrumation
The act of, or an instance of, thrusting the penis into the mouth; active penetration of a mouth.

irruption
The action of irrupting or breaking into; a violent entry or invasion; an inbreaking; an intrusion.
An abrupt increase of an animal population.
An abrupt increase in the size of a movement or organization.

irruptions
plural of irruption

iruska
A sacred Pawnee dance involving fire.

isabnormal
A line connecting places on a map with equal deviation from the average temperature at that latitude.

isabnormals
plural of isabnormal

isagoge
An introduction, especially (particularly capitalized) Porphyry's introduction to the works of Aristotle.

isagogics
That part of theological science directly preliminary to actual exegesis, or interpretation of Scripture.

isallobar
A line joining points of equal pressure change during a specific time interval, especially over three hours.

isallobars
plural of isallobar

isapostolicity
The quality of being isapostolic.

isarithm
An isoline, or contour line.

isarithms
plural of isarithm

isatide
A white crystalline substance obtained by the partial reduction of isatin.

isatides
plural of isatide

isba
Alternative form of izba.

isbas
plural of isba

isbufylline
A particular antibronchospastic xanthine.

ischemicity
The quality of being ischemic.

ischiectomy
Surgical removal or excision of the ischium.

ischiopagi
plural of ischiopagus

ischiopagus
One of a pair of conjoined twins who are united at the pelvis.

isegoria
equality of all citizens in freedom of speech, specially in public assemblies.
the right of each citizen of a city (or other unit) to speak in public and address that city.

isentrope
A surface of constant potential temperature
An isentropic state or system

isentropes
plural of isentrope

isentropicity
The condition of being isentropic

isha
The evening/night Islamic prayer.

ishas
plural of isha

isht
Shit (in various senses).

isicathamiya
A genre of popular South African vocal music derived from the Zulu genre called mbube.

isicle
Obsolete form of icicle.

isicles
plural of isicle

isiewu
Alternative form of isi ewu.

isl
Abbreviation of island.

islamism
Alternative letter-case form of Islamism.

islamophobia
Alternative letter-case form of Islamophobia.

islamophobias
plural of islamophobia

islandhood
The quality of being an island (geographical feature).
The property of being an island phrase.

islandness
The property of being or belonging to an island, especially insofar as it affects society and culture.

islandology
The study of islands.

islomania
A fascination with islands.

ism
An ideology, system of thought, or practice that can be described by a word ending in -ism.
An ideology, system of thought, or practice that can be described by a word ending in -ism.

isms
plural of ism

isness
The quality of being; existence as something.

isoabsorption
A feature of the absorption spectra of a mixture of substances that are reacting with each other, in that at one frequency the absorption will remain constant throughout the reaction

isoabsorptions
plural of isoabsorption

isoaddition
The effect of the addition of two or more similar agents

isoallele
Either of several near-identical alleles that can only be distinguished when in combination with another (typically mutant) allele

isoalleles
plural of isoallele

isoallergen
Any of a group of variants of an allergen

isoallergens
plural of isoallergen

isoametropia
The condition of having equal or nearly equal ametropia in both eyes.

isobacteriochlorin
Any of a class of chlorins, based on 12,13,17,18-tetrahydro-21H,22H-porphine, that are isomeric with bacteriochlorin.

isobacteriochlorins
plural of isobacteriochlorin

isobarbaloin
One of the diastereoisomers of aloin, the other being barbaloin.

isobaricity
The condition of being isobaric.

isobath
A line on a map or chart joining places of equal depth of water; a depth contour.

isobaths
plural of isobath

isobergapten
A particular furocoumarin.

isobioclimate
A line connecting related bioclimates

isobioclimates
plural of isobioclimate

isobole
A line on an isobologram joining points of equal activity

isoboles
plural of isobole

isobolography
The production of isobolograms

isocausality
The condition of being isocausal.

isochar
A line on a map showing areas that contain plants with the same characteristics

isochars
plural of isochar

isochasm
A line connecting places on the Earth's surface that have the same mean frequency of auroras.

isochasms
plural of isochasm

isocheim
An isotherm connecting points on a map with equal mean winter temperature.

isochlor
An isoline connecting points on a map with the same concentration of chlorine in water.

isochoricity
The quality or state of being isochoric.

isochromosome
An abnormal chromosome in which one arm has been lost and replaced with an exact copy of the other arm.

isochromosomes
plural of isochromosome

isochronality
The property of being isochronal.

isochrone
An isoline on a map or chart connecting points that have the same value for some time-related variable.
A semicubical parabola.

isochronicity
The condition of being isochronic

isochronism
The state or quality of being isochronous.

isochronisms
plural of isochronism

isochronon
A clock designed to keep very accurate time.

isochronons
plural of isochronon

isochrony
The state of being isochronous.

isoclinism
The condition of being isoclinic

isocoria
The condition of having the pupils of both eyes the same size

isocost
A curve that represents a combination of various inputs that cost the same.

isocosts
plural of isocost

isocovariance
isobaryonic covariance

isocracies
plural of isocracy

isocracy
A form of government where all citizens have equal political power.

isocryme
An isoline connecting points on the Earth's surface having the same mean temperature in the coldest month of the year.

isocrystal
A kind of p-adic analogue of a sheaf.

isocrystals
plural of isocrystal

isocurvature
A condition of constant curvature

isodiametricity
The quality of being isodiametric.

isodicentricism
The quality of being isodicentric, equally dicentric.

isodimorphism
isomorphism between the two forms of two dimorphous substances, in which each form of one is isomorphic with a form of the other.

isodirectionality
The condition of being isodirectional

isodisplacement
A condition where a specific quantity related to displacement remains constant.

isodisplacements
plural of isodisplacement

isodistance
A variant of isochrone connecting places that are the same distance from a particular place

isodistances
plural of isodistance

isodomon
A form of masonry in which the vertical joint of each course is in the middle of the block beneath.

isodomum
isodomon

isodonty
The condition of being isodont

isodop
A line of equal Doppler velocity.

isodops
plural of isodop

isodoublet
A group of two particles differing only in isospin

isodoublets
plural of isodoublet

isodrosotherm
A line of equal or constant dew point on a graph or chart, such as a weather map.

isodrosotherms
plural of isodrosotherm

isoduplication
The joining of two near-identical strands of a broken chromosome

isoduplications
plural of isoduplication

isodynamia
Alternative form of isodynamy.

isodynamy
The property of being isodynamic.

isoecho
A line on a map joining points of equal radar reflectivity.

isoechoes
plural of isoecho

isoechogenicity
The condition of being isoechogenic

isoechoicity
The condition of being isoechoic

isoelasticity
The quality of being isoelastic.

isoelectrofocalisation
isoelectric focalisation / focusing

isoelectrofocalization
Alternative form of isoelectrofocalisation.

isoenhancement
The quality of having the same level of enhancement.
A middle level of enhancement, neither bright nor dim.

isoenthalp
A line joining points of constant enthalpy.

isoenzymology
The study of isoenzymes