underdosage
An insufficient dosage

underdosages
plural of underdosage

underextraction
Less than the normal or optimum amount of extraction

undermeasurement
The process or result of undermeasuring; a measurement that is smaller than it should be.

undermeasurements
plural of undermeasurement

underpackings
plural of underpacking

underprescription
Failure to prescribe a drug as often as appropriate, where the appropriateness is defined by concepts such as standard of care, clinical guideline recommendations, or similar.
Prescription of an inadequate amount of a drug.

underproduction
The production of an insufficient amount.

underproductions
plural of underproduction

underreplacement
The replacement of a substance by a smaller amount.

underresuscitation
The administration of an inadequate amount of fluid during an attempt to resuscitate somebody.

unders
plural of under

undershipment
Shipment of an insufficient amount or quantity of goods.

undertilde
A tilde placed underneath a character.

undertildes
plural of undertilde

ungues
plural of unguis

unguis
The nail, claw, talon, or hoof of a finger, toe, or other appendage.
One of the terminal hooks on the foot of an insect.
The slender base of a petal in some flowers; a claw; an ungula.
An old measure equal to the length of the nail of the little finger.

unguises
plural of unguis

unilineage
A single, unique lineage

unitage
The determination of the amount of something to be regarded as a unit.
The amount thus determined.

unitages
plural of unitage

units
plural of unit

unnilbium
Nobelium.

unnilennium
meitnerium.

unnilhexium
seaborgium.

unnilseptium
bohrium.

unniltrium
lawrencium.

unnilunium
mendelevium.

untribium
The systematic element name for the (as yet undiscovered) chemical element with atomic number 132 (symbol Utb).

untriennium
The systematic element name for the chemical element with atomic number 139 (symbol Ute).

untrihexium
The systematic element name for the (as yet undiscovered) chemical element with atomic number 136 (symbol Uth).

untrinilium
The systematic element name for the (as yet undiscovered) chemical element with atomic number 130 (symbol Utn).

untriquadium
The systematic element name for the (as yet undiscovered) chemical element with atomic number 134 (symbol Utq).

untriseptium
The systematic element name for the (as yet undiscovered) chemical element with atomic number 137 (symbol Uts).

untritrium
The systematic element name for the (as yet undiscovered) chemical element with atomic number 133 (symbol Utt).

untriunium
The systematic element name for the (as yet undiscovered) chemical element with atomic number 131 (symbol Utu).

ununbium
The former systematic element name for the chemical element with atomic number 112 (symbol Uub), which has been officially changed to copernicium.

ununennium
The systematic element name for the (as yet undiscovered) chemical element with atomic number 119 (symbol Uue).

ununhexium
The previous systematic element name for livermorium, the chemical element with atomic number 116.

ununoctium
The systematic element name for the chemical element with atomic number 118 (symbol Uuo); now named oganesson.

ununpentium
The systematic element name for the chemical element with atomic number 115 (symbol Uup). The element is now named moscovium.

ununquadium
The systematic element name for flerovium, the chemical element with atomic number 114 (symbol Uuq).

ununseptium
The systematic element name for the chemical element with atomic number 117 (symbol Uus). The element is now named tennessine.

ununtrium
The systematic element name for the chemical element with atomic number 113 (symbol Uut). The element is now named nihonium.

unununium
roentgenium.

upcomers
plural of upcomer

upheapings
plural of upheaping

upregulation
The process, in the regulation of gene expression, in which the number, or activity of receptors increases in order to increase sensitivity.

upregulations
plural of upregulation

upscalings
plural of upscaling

uptime
The period of time a computer has functioned since last requiring a reboot.
The amount of time, or the proportion of total time, during which some system or machinery is operable.

uptimes
plural of uptime

uranium
The element with atomic number 92 and symbol U. A radioactive silvery-grey metal in the actinide series.

uraniums
plural of uranium

urinometer
A hydrometer used to measure the specific gravity of urine.

urinometers
plural of urinometer

uroflow
A test that measures the rate of flow during urination.

uroflows
plural of uroflow

urorrhagia
Synonym of polyuria.

utmosts
plural of utmost

valiseful
A quantity contained in a valise.

valisefuls
plural of valiseful

valver
Something, such as a radio or an engine, with the specified type or number of valves.

valvers
plural of valver

varentropy
A form of entropy that is a measure of the uncertainty of a random variable.

variabilities
plural of variability

variability
The state or characteristic of being variable.
The degree to which a thing is variable. In data or statistics this is often a measurement of distance from the mean or a description of data range.

variables
plural of variable

variadics
plural of variadic

varray
An array whose number of elements can vary, up to a pre-defined maximum.

varrays
plural of varray

varsouvienne
Alternative form of varsovienne.

varsouviennes
plural of varsouvienne

varsoviana
Alternative form of varsovienne.

varsovianas
plural of varsoviana

varsovienne
A polka-like Polish dance.
A piece of music for such a dance, or having its slow triple time characteristic strong accent beginning every second measure.

varsoviennes
plural of varsovienne

vaultful
As much as a vault will hold.
A large amount.

vaultfuls
plural of vaultful

vedro
A Russian liquid measure, approximately 2.7 imperial gallons.

vedroes
plural of vedro

vedros
plural of vedro

velocities
plural of velocity

velocity
A vector quantity that denotes the rate of change of position with respect to time, combining speed with a directional component.
A rapidity of motion.
The rate of occurrence.
The number of times that an average unit of currency is spent during a specific period of time.
The value corresponding to how hard a key is struck on a MIDI controller or keyboard.

veloergometer
An ergometer built into an exercise bicycle

veloergometers
plural of veloergometer

velte
An old French unit of liquid measure, approximately 7.617 litres.

veltes
plural of velte

velveeta
The crossposting of a message to an unreasonably large number of newsgroups.

vergence
The simultaneous turning of both eyes when focusing.
A measure of convergence or divergence of rays.
The direction of the overturned component of an asymmetric fold.

vergences
plural of vergence

vernier
A secondary scale with finer graduations than the primary scale of a measuring device; the vernier measures between graduations of the larger scale.
A secondary control input with finer control than the primary, or coarse, input; for example the vernier frequency tuning knob on a radio.
A secondary system of force application for the attitude control of a spacecraft; for example a vernier thruster.

verniers
plural of vernier

verso
The back side of a flat object which is to be examined visually, as for reading, such as a sheet, leaf, coin or medal;
The back side of a flat object which is to be examined visually, as for reading, such as a sheet, leaf, coin or medal;

versos
plural of verso

vertometer
An ophthalmic bench instrument used to measure dioptric power of a lens.

vertometers
plural of vertometer

veta
A second-order measure of derivative price sensitivity, expressed as the rate of change of vega with respect to time, or equivalently the rate of change of theta with respect to changes in the volatility of the underlying asset.