femtocoulomb
An SI unit of electric charge equal to 10⁻¹⁵ coulombs. Symbol: f
Entries starting with F
273 entries.
femtofarad
An SI unit of electrical capacitance equal to 10⁻¹⁵ farads. Symbol: fF
femtogram
An SI unit of mass equal to 10⁻¹⁵ grams. Symbol: fg
femtojoule
An SI unit of energy, work, and heat equal to 10⁻¹⁵ joules. Symbol: fJ
femtokatal
An SI unit of catalytic activity equal to 10⁻¹⁵ katals. Symbol: f
femtometre
An SI unit of length equal to 10⁻¹⁵ metres. Symbol: fm
femtosecond
An SI unit of time equal to 10⁻¹⁵ seconds. Symbol: fs
fennie
A fenestration in the leaf of a plant, such as Monstera.
fenny
Alternative form of fennie (“fenestration”).
ferric carbide
nounMetallurgy
A compound of iron with carbon (Fe₃C).
ferry van
A railway goods van intended for train ferry traffic to and from continental Europe.
festoon
Two sets of rollers used to create a buffer of material on web handling equipment.
fettle
A seam line left by the meeting of mould pieces.
fettler
An ostler; one who looks after the horses in a mine.
fiber
A material whose length is at least 1000 times its width.
FICT
Initialism of Fixtureless In-Circuit Test.
field coil
An electromagnet, consisting of a coil of wire through which a current flows, used to generate a magnetic field in an electromagnetic machine, typically a rotating machine such as a motor or generator.
field emission display
a flat panel display technology that uses large-area field electron sources to provide electrons that strike coloured phosphors to produce a colour image. In a general sense, an FED consists of a matrix of cathode ray tubes, each tube producing a single sub-pixel, grouped in threes to form red-green-blue (RGB) pixels.
field head
nounMetalworking
The head formed by upsetting the bucktail of a rivet after it is inserted through the materials to be connected, as opposed to the factory head made when the rivet is manufactured; the field head of a solid rivet is typically pancake-shaped, depending on the shape of the bucking bar or other tool used to upset it. The field head of a blind rivet is typically doughnut-shaped.
field magnet
A magnet used to produce a magnetic field in a device.
field seam
nounConstruction
A splice or seam made in the field (not factory) where overlapping sheets are joined together using an adhesive, splicing tape, or heat or solvent welding.
field-programmable gate array
a gate array designed to be configured by the customer or designer after manufacturing in the field, i.e. after manufacturing.
filament
A continuous object, limited in length only by its spool, and not cut to length.
fill site
A designated location for a firefighter to draw or pump water out of a natural source, such as a lake or river.
fill soil
nounConstruction
Soil used for filling, that is, found within or contemporaneously placed within a cavity, or a supply of soil for use as fill.
fillet
nounCarpentry
Any scantling smaller than a batten.
filling site
A designated location for a firefighter to draw or pump water out of a natural source, such as a lake or river.
fin gripper
nounRobotics
A gripper designed to act similarly to how a fish fin wraps around an object that pushes into it
final point
nounSurveying
A marker, similar to a benchmark, placed to honor a surveyor after his death.
final setting time
nounConstruction
Of concrete, the time elapsed between the moment that water is added to the cement, and the moment when the paste has completely lost its plasticity.
finger grip
An instrument used in recovering rods or tools dropped into a bored shaft.
finger joint
nounWoodworking
A joint, usually glued, in which multiple integral protrusions are fit into mating slots, used especially for manufacturing long moldings.
finger-light
Of a vehicle, easy to steer.
finger-piece
A mechanical or structural component designed to be touched, held, or guided by the fingers.
finisher
A construction machine used to smooth a newly constructed road surface.
fire alarm
An emergency response to a fire by the fire department with manpower and equipment.
fire brigade
An organization, often part of a local government, whose purpose is preventing and putting out fires.
fire bucket
A bucket holding water or sand, etc., used to extinguish fires.
fire cabinet
a cabinet filled with firefighting equipment
fire company
An organization whose purpose is to extinguish fires.
fire damper
A mine worker who detects and clears a mineshaft of firedamp by intentionally burning or blowing it up.
fire department
An organization, often part of a local government, whose purpose is preventing and putting out fires. May provide other emergency services as well, such as first aid and search and rescue.
fire engine
A vehicle used by firefighters to pump water to fight a fire. Typically, a fire engine carries a supply of water and has the ability to connect to an external water supply.
fire hydrant
A device used by firefighters to obtain water from the main supply, consisting of a barrel, connections for hose and a valve assembly.
fire iron
nounRail equipment
One of a set of tools kept on a steam locomotive for a similar purpose.
fire service
Service in a fire department or other firefighting organization, whether as a chosen career, or as a result of volunteering or a form of prison labor.
fire site
A designated location for a firefighter to draw or pump water out of a natural source, such as a lake or river.
fire truck
A motor truck that serves as firefighting apparatus (a fire appliance).
firebreak
An area cleared of all flammable material to prevent a fire from spreading across it.
fired
adjectiveIndustrial ceramics
Heated in a furnace, kiln, etc., to become permanently hardened.
firedamp
A flammable gas (mostly methane) found in coal mines; forms an explosive mixture with air.
firesetting
The use of fire to soften or crack the working face of a lode, to facilitate excavation; later superseded by the use of explosives.
firestop
Any multi-component system designed to stop fire and smoke from migrating through openings around piping, wiring, ductwork, cable trays, bus ducts, etc., as well as through movement joints in walls and floors that are required to have a fire-resistance rating.
firestream
The stream of water or foam used to extinguish a fire.
firewater
nounManufacturing
Water for use in firefighting.
firing
The process of applying heat or fire, especially to clay, etc., to produce pottery.
firm error
A type of error where a signal or datum becomes wrong and remains wrong until the equipment is power-cycled, but does not physically damage the equipment's hardware.
first article
nounManufacturing
A preproduction model, initial sample or pilot model.
first flush
The first growth of buds, flowers, seeds, or whatever is harvested from a plant.
First Law of Robotics
nameRobotics
One of the Three Laws of Robotics, forbidding a robot to harm a human, through either action or inaction.