subporphyrin
A reduced ring shaped molecule containing three pyrrole groups rather than the four found in porphyrins.

subproblem
A problem whose solution contributes to the solution of a larger problem.

subproblems
plural of subproblem

subproduct
byproduct

subproducts
plural of subproduct

subpunctis
A compound neume consisting of one or more notes appended after a neume.

subpurpose
A subsidiary purpose; subgoal

subpurposes
plural of subpurpose

subquark
Any of several hypothetical particles construed as subcomponents of quarks (and leptons).

subquarks
plural of subquark

subradiance
The cooperative inhibition of spontaneous emission by a destructive interatomic interference

subscene
A scene making up part of a larger scene.

subscenes
plural of subscene

subsemimodule
A semimodule contained in a larger semimodule. (Compare submodule, semimodule.)

subsemimodules
plural of subsemimodule

subshine
A surface appearance between a shine and a matte appearance.

subsilicate
A basic silicate.

subsilicates
plural of subsilicate

substalagmite
A compact non-crystalline calcium carbonate deposit.

substep
Any smaller element of a step in a procedure.

substeps
plural of substep

substituent
Any atom, group, or radical substituted for another, or entering a molecule in place of some other part which is removed.
Pro-form.

substituents
plural of substituent

substratism
The theory that creoles take their structure from their substrate languages.

subsublease
Synonym of subunderlease.

subsubleases
plural of subsublease

subsubproblem
A subproblem of a subproblem.

subsubproblems
plural of subsubproblem

subsubroutine
A subroutine called from another subroutine.

subsubroutines
plural of subsubroutine

subsubtenancies
plural of subsubtenancy

subsubtenancy
Synonym of subunderlease.

subsulfate
Alternative form of subsulphate.

subsulfates
plural of subsulfate

subsulphate
A sulphate with an excess of the base.

subsulphates
plural of subsulphate

subtask
An act that must be completed as an element of completing a larger and more complex task.

subtasks
plural of subtask

subtaxa
plural of subtaxon (Elements within a taxon).

subtaxon
One of the elements within a taxon.

subtegula
An elongate sclerite at the base of a tegula

subtextualities
plural of subtextuality

subtextuality
The idea that a given text can contain countercurrents or repressed elements within it, or such elements in a text.

subtilin
A particular bacteriocin produced by the bacterium Bacillus subtilis.

subtilosin
Any of a group of bacteriocins produced by Bacillus subtilis

subtilosins
plural of subtilosin

subunderlease
A lease subunderlet by a subtenant to a subundertenant; a third-order lease.

subunderleases
plural of subunderlease

subunit
Any subdivision of a larger unit.
A protein subunit.

subunits
plural of subunit

subvolcanite
A subvolcanic xenolith

succimer
A particular chelating agent, meso-2,3-dimercaptosuccinic acid

succin
amber; succinic resin

succination
Reaction with a derivative of succinic acid
Post-translational modification of protein that occurs when fumarate reacts with cysteine groups

succinations
plural of succination

succinimidyl
A succinimide radical or functional group

succinimidyls
plural of succinimidyl

succinoglycan
An extracellular polymeric substance found in Alcaligenes faecalis var myxogenes and Sinorhizobium meliloti.

succinonitrile
A nitrile with chemical formula C₂H₄(CN)₂, a colourless waxy solid.

succinonitriles
plural of succinonitrile

succinyl
A radical derived from succinic acid

succinylation
The addition of a succinyl radical to a compound
The posttranslational modification of lysine residues in proteins by such a reaction

succinylations
plural of succinylation

succinylproteome
A proteome containing succinylproteins

succinylproteomes
plural of succinylproteome

succinylproteomics
The proteomics of succinylproteomes

succinyls
plural of succinyl

sucralose
A selectively chlorinated sucrose, used as an artificial sweetener.

sucraloses
plural of sucralose

sucrate
A compound of sucrose (or some related carbohydrate) with a base.

sucrates
plural of sucrate

sucroglyceride
Any mixture of sucrose esters of fatty acids and glycerides.

sucroglycerides
plural of sucroglyceride

sucrol
The sweetener dulcin.

sucrose
A disaccharide with formula C₁₂H₂₂O₁₁, consisting of two simple sugars, glucose and fructose; normal culinary sugar.

sucroses
plural of sucrose

sudation
Perspiration; sweat (fluid).
The process of perspiring.

sudations
plural of sudation

suffossion
Internal erosion by liquid percolating through clay, sand, or silt.

suffossions
plural of suffossion

sufganiya
Alternative form of sufganiyah.

sufganiyah
A deep-fried, ball-shaped doughnut, usually filled with jelly or custard and topped with powdered sugar.

sufganiyot
plural of sufganiya
plural of sufganiyah

sufuria
A deep metal cooking pot with a flat base and no handles.

sufurias
plural of sufuria

sugarbag
A bag, typically made of cloth, for holding sugar.
Wild honey or honeycomb.

sugarbags
plural of sugarbag

sugarhouse
A factory for the refining of raw sugar from Barbados.
A small cabin or shack where sap collected from sugar maples is boiled into maple syrup.

sugarhouses
plural of sugarhouse

sugarlessness
Absence of sugar.

sugarworks
A factory that produces sugar.

sugi
Wood of the Japanese cedar (Cryptomeria japonica).

sulbutiamine
A synthetic derivative of thiamine.

sulcotidil
A particular vasodilator.

sulema
mercuric chloride; corrosive sublimate

sulfacetate
A mixture of sulfate and acetate used in dyeing.

sulfacetates
plural of sulfacetate

sulfachloropyridazine
The sulphonamide 4-amino-N-(6-chloro-3-pyridazinyl)benzenesulfonamide

sulfakinin
Any of a group of neuropeptides found in crustaceans and insects.

sulfakinins
plural of sulfakinin

sulfamethazine
sulfadimidine

sulfane
hydrogen sulfide (IUPAC name)
polysulfide

sulfanes
plural of sulfane

sulfanide
Bisulfide, the anion HS⁻.

sulfanides
plural of sulfanide

sulfanyl
The univalent -SH radical

sulfanylidene
The organosulfur divalent functional group =S; the sulfur analogue of the oxo-radical.

sulfanyloxazoline
Any sulfanyl derivative of an oxazoline

sulfanyloxazolines
plural of sulfanyloxazoline

sulfanyls
plural of sulfanyl

sulfarsenide
Alternative form of sulfoarsenide.

sulfarsphenamine
An orange-yellow powder with the chemical formula C₁₄H₁₄As₂N₂Na₂O₈S₂.

sulfasuxidine
succinylsulfathiazole

sulfatation
Modification by the addition of a sulfate group

sulfatations
plural of sulfatation

sulfatide
sulfates of glycosphingolipids

sulfatides
plural of sulfatide

sulfation
The replacement of a hydrogen atom of an organic compound with a sulfate (-OSO₂OH) functional group, or the replacement of the hydrogen atoms of two molecules to form a sulfate (R-OSO₂O-R)

sulfations
plural of sulfation

sulfenation
Reaction with, or conversion to a sulfenic acid

sulfenations
plural of sulfenation

sulfene
Any S-dioxide of a thioaldehyde or thioketone; R₂SO₂.

sulfenes
plural of sulfene

sulfenylation
The introduction of a sulfenyl group into a compound

sulfenylations
plural of sulfenylation

sulfheme
An inactive form of heme formed by reaction with hydrogen sulfide

sulfhydrase
An enzyme that replaces a sulfhydryl group with a hydroxy group.

sulfidation
Reaction with sulfur to form sulfides.

sulfidations
plural of sulfidation

sulfido
Sulfide as a ligand.

sulfilimine
sulfimide

sulfilimines
plural of sulfilimine

sulfimidation
The imidation (conversion to a sulfimide) of a sulfide

sulfimidations
plural of sulfimidation

sulfimine
sulfimide

sulfimines
plural of sulfimine

sulfinamidine
any amidine of a sulfinic acid RS(=NR')NR''₂

sulfinamidines
plural of sulfinamidine

sulfination
Addition of a sulfonate (-SO₂H) group into an organic compound.

sulfinimine
sulfimide

sulfinimines
plural of sulfinimine