isoflor
An isoline on a map that connects areas where a given number of plant taxa can be found, particularly species within a certain genus or family.
An isoline on a map that connects sites with similar Eocene fossil floras.

isoflors
plural of isoflor

isofluxes
plural of isoflux

isogram
A word in which no letter of the alphabet occurs more than once.
A line on a map or chart, such as a contour line, joining points that have the same value for some quantity.

isograms
plural of isogram

isogravs
plural of isograv

isolectin
Any of a number of closely related lectins that are difficult to separate, and act together

isolectins
plural of isolectin

isoluminance
Any of a number of isoluminant points

isoluminances
plural of isoluminance

isomer
Any of two or more compounds with the same molecular formula but with different structure.
Any of two or more atomic nuclei with the same mass number and atomic number but with different radioactive properties.

isomere
Archaic form of isomer.

isomeres
plural of isomere

isomers
plural of isomer

isooctane
any isomer of n-octane; especially 2,2,4-trimethylpentane, used as a reference in the determination of the octane number of fuel

isooctanes
plural of isooctane

isopleth
A line drawn on a map through all points having the same value of some measurable quantity.
A line in a phase diagram indicating the same mole fraction.

isopleths
plural of isopleth

isopoll
A line on a map showing places having the same amounts of a particular pollen.

isopolls
plural of isopoll

isoreceptor
Either of a number of receptors that have the same, or similar function

isoreceptors
plural of isoreceptor

isoresponse
Any of a number of responses of the same degree

isoresponses
plural of isoresponse

isosafrol
Alternative form of isosafrole.

isosafrole
An aromatic compound, a precursor for MDP2P which is converted into the psychoactive drug MDMA or ecstasy, found in small amounts in essential oils but more commonly obtained by isomerizing safrole.

isosafroles
plural of isosafrole

isosafrols
plural of isosafrol

isoscalars
plural of isoscalar

isospin
A quantum number or symmetry related to the strong interaction and hence to differences between atoms with the same number of nucleons.

isospins
plural of isospin

isostere
Any of a group of molecules or ions that have the same number of valence electrons and have chemical or physical similarities. For example, SH, NH2 and CH3 are isosteres of OH.

isosteres
plural of isostere

isoteniscope
A measuring device used to measure the vapor pressure of liquids.

isotones
plural of isotone

isotopolog
Any of a group of compounds differing in the number, and/or position of substitution, of atoms by isotopes.

isotopologs
plural of isotopolog

isovist
A measurement representing the volume of space visible from a given point of known location.

isovists
plural of isovist

issaron
Synonym of omer: a Hebrew unit of dry volume equal to about 2.3 L or 2.1 quarts.

issarons
plural of issaron

isthmi
plural of isthmus

isthmus
A narrow strip of land, bordered on both sides by water, and connecting two larger landmasses.
Any such narrow part connecting two larger structures.
An edge in a graph whose deletion increases the number of connected components of the graph.

isthmuses
plural of isthmus

ittrium
Archaic form of yttrium.

ivories
plural of ivory

ixionid
A centaur.

ixionids
plural of ixionid

jabillion
An unspecified large number (of).

jabillions
plural of jabillion.

jabo
A type of Spanish dance in a three-in-a-measure rhythm.

jajillion
An unspecified large number (of).

jajillions
plural of jajillion

jambiers
plural of jambier

jataka
Any of a large number of Indian tales concerning the previous lives of Gautama Buddha.

jatakas
plural of jataka

jazillion
An unspecified large number (of).

jazillions
plural of jazillion

jerib
A unit of land used in the Middle East; its precise size depends on region and on time-period, and can range from a thousand square meters to a hectare.

jeribs
plural of jerib

jersey
A garment knitted from wool, worn over the upper body.
A shirt worn by a member of an athletic team, usually oversized, typically depicting the athlete's name and team number as well as the team's logotype.
A type of fabric knit.

jerseys
plural of jersey

jigawatt
Pronunciation spelling of gigawatt (less common variant).

jigawatts
plural of jigawatt

jillion
An unspecified large number (of).

jillions
plural of jillion

jitneys
plural of jitney

jizillion
a very large, but not specific number

jizillions
plural of jizillion

jobday
A day of the week, or regular portion of the day (typically 8 hours), during which one is on the job/at work
A measure of time required to do a particular job or set of tasks

jobdays
plural of jobday

jobhour
A measure of time required to do a particular job or set of tasks.
Synonym of workhour.

jobhours
plural of jobhour

jobweek
The range of days of the week during which one is normally at work.
A measure of time required to do a particular job or set of tasks.

jobweeks
plural of jobweek

jonidan
The division of sumo wrestlers above jonokuchi and below sandanme, containing the highest number of rikishi.

joram
Alternative spelling of jorum.

jorams
plural of joram; alternative form of jorums.

jorum
A large vessel for drinking (usually alcoholic beverages).
The contents, or quantity of the contents, of such a vessel.
A large quantity.

jorums
plural of jorum.

joulemeter
Any of various devices used to measure energy (especially electrical energy) in joules

joulemeters
plural of joulemeter

journaux
plural of journal (“amount of land”)

jueteng
An illegal numbers game lottery, using a tambiolo/tambola/tómbola container that is spun or a receptacle, sometimes shaped like a bottle or small-necked phial, that is shaken with the winning number from 1 to 37 on a ball or raffle ticket paper drawn after all bets are submitted

juger
A Roman unit of area, equivalent to 2 acti or 28,800 square feet (about ¼ ha).

jugers
plural of juger

jugerum
Alternative form of juger: a Roman unit of area.

jugerums
plural of jugerum

jumprock
Any of a number of North American fish in the sucker genus Moxostoma

jumprocks
plural of jumprock

junt
A fair-sized piece or amount; a chunk (of anything, especially meat or other food).
Thing, item.

junts
plural of junt

kab
Alternative form of cab: a former Hebrew unit of volume.

kabillion
An unspecified large number (of).

kabillions
plural of kabillion

kabs
plural of kab

kafiz
Alternative form of qafiz (“unit of measurement for volume”).

kafizes
plural of kafiz

kajillion
An unspecified large number (of).

kajillions
plural of kajillion

kakuro
A type of number puzzle, similar to a crossword but with numbers. Each "clue" is the sum of the digits to be placed in its group of squares, and no digit can be repeated within a group.

kakuros
plural of kakuro

kalium
potassium.

kaliuresis
The presence of (an excessive amount of) potassium in the urine

kaluresis
Alternative form of kaliuresis.

kanal
A unit of area used in parts of northern India and in Pakistan, equivalent to one eighth of an acre.

kanals
plural of kanal

kandies
plural of kandy

kandy
Alternative form of candy (Indian unit of mass)

kaneh
A Hebrew measure of length, equal to six cubits.

kantar
a unit of weight used in Eastern Mediterranean countries, varying from place to place (44.93 kg in Egypt)

kantars
plural of kantar

kappas
plural of kappa

karat
Alternative spelling of carat.

karats
plural of karat

karkadeh
Alternative form of carcade (“infusion made from roselle”).

karyoplast
A cellular nucleus together with a plasma membrane containing a small amount of cytoplasm

karyoplasts
plural of karyoplast

katrillion
An unspecified large number (of).

katrillions
plural of katrillion

kayser
A unit of wavenumber in the CGS system of units, equivalent to the number of waves in one centimeter.

kaysers
plural of kayser