Term Definition
Oak Floor 1 like
A popular type of flooring, generally fitted with small tongue and groove oak strips
Oak Veneer 1 like
A thin oak layer glued to another wood to produce a decorative facing; commonly seen as white oak and red oak
Oatmeal Paper 0 likes
Wallpaper created by scattering sawdust over a surface with glue on it
OB 2 likes
Octave Band
Obelisk2 likes
A stone pillar, often a monument with a square base and oblique sides that taper like a pyramid to form a pointed top
Oblique 2 likes
An angle; not parallel or perpendicular; sloping
Oblique Slip Fault 1 like
A combination of faults where the movement is diagonal along the fault plane dip
Obscure Glass1 like
obscure glass
Glass that transfers light but which can’t be seen through
Obsolescence 2 likes
Not useful any longer; out of date
Obtuse Angle 2 likes
Angle between 90 degrees and 180 degrees in size
Obtuse Triangle 2 likes
A triangle with one angle that is more than 90 degrees
OC 1 like
On center; describes the spacing of framing elements from the centers of adjacent members in a building; also seen as O/C
See Oxygen Cutting
Occupancy 2 likes
The rate of occupation of a place
Use of a building, such as a school, restaurant, residence or office
Occupancy Importance Factor (I) 1 like
Building code terminology used to identify important occupancies
Occupational Safety & Health Administration (OSHA) 0 likes
U.S. Department of Labor/OSHA, 200 Constitution Avenue, NW, Washington DC, Tel: (202) 219-7725, URL: www.osha.gov
Ochre 2 likes
A reddish or yellowish earth pigment made from iron ore, employed in paint
Octyl Alcohol-Ethyl Hexanol 2 likes
Chemical in absorption machines that diminishes the absorber’s surface tension
Oculus 1 like
A circular or eye-shaped opening in a dome
A round window
OD 1 like
Outside Diameter
Odor 1 like
A smell; may be pleasant or unpleasant
Off Cycle 0 likes
When a system is not functioning
Off-Site 1 like
Anything not on the building or job site
Offer 1 like
To try to provide something that may be accepted or refused
Offeror 1 like
The person who makes an offer
Office 3 likes
A room or building in which professional or business activities take place
Office Building 0 likes
A building containing several business offices
Office Cubicle 3 likes
A compartment with fixed or movable walls which houses a person who works in an office
Office Park 3 likes
A prearranged group of office buildings with shared management, landscaping, parking, and other facilities
Office Partition2 likes
office partition
Portable interior wall that separates an office area
Office Safe1 like
office safe
A strong container with a lock that secures money or valuables in an office; usually fire-resistant
Office Trailer 2 likes
A vehicle used to conduct business activities on a job site
Offset 1 like
Sudden bend in a straight bar or pipe to avoid obstruction
Offset Cabinet Construction 2 likes
Constructing cabinets so the back corners of the doors and drawer fronts overlap the face frame and hide the joint
Offset Hinge3 likes
offset hinge
A 90 degree offset hinge that moves the center of a door’s rotation
OG 0 likes
Ogee 0 likes
A decorative curved section of a moulding, partially convex and partially concave, like an elongated flat S
Ogee Molding 3 likes
A molding with a modified flat S-shaped profile
Ogee Roof 0 likes
An architecturally designed roof inspired by Eastern culture
Ogive 2 likes
An arch with an apex
Ohm (R) 1 like
Measures the resistance of an electrical current; occurring when a volt creates an ampere of current to flow
Ohmmeter1 like
This instrument calculates resistance measured in ohms
Ohms Law 2 likes
The electrical law that defines the ampere, voltage and resistance relationship; equation: Amperes (I) x Ohms (R) = Volts (V)
Oil Absorption 0 likes
The measure of the rate at which oil absorption occurs in pigments
Oil Base Caulking 2 likes
Distributed by tube, caulking is created from resins and oil substances
Oil Binding 1 like
An occurrence caused by a layer of oil above a liquid refrigerant whereby the refrigerant is unable to evaporate at the usual pressure and temperature
Oil Burner Nozzle1 like
oil burner nozzle
A device that sprays a mist of atomized fuel oil; the combustion properties of the fuel are enhanced
Oil Colors 1 like
A paste derived from crushing colors in linseed oil
Oil Fired Boiler 3 likes
A vessel in which oil is heated and sent to a pressurized nozzle, from which it is then dispensed as a mist and lit via electric spark
Oil Furnace4 likes
oil furnace
A furnace used to burn oil to produce heat
Oil Length 0 likes
A measurement used to grade varnish by oil length by calculating the gallons of oil present in 100 pounds of resin; shortoil varnish is weaker than long-oil varnish; a common long-oil varnish is spar varnish, while a common shortoil varnish is rubbing varnish
Oil of Vitriol 3 likes
See Sulphuric Acid
Oil Paint2 likes
oil paint
Paint comprised of oil that dries
Oil Separator2 likes
oil separator
Oil is removed from gaseous refrigerants with this device
Oil Soluble 0 likes
Ability to be dissolved when exposed to oil
Oil Stain 0 likes
A stain for wood which is comprised of dyes that are oil soluble and solvents like turpentine; will penetrate wood pores and may bleed
Oil Switch1 like
oil switch
Typically fitted in a vent pipe, this switch or relay allows the burner to be turned off within a 45 second time period when a stack is unable to reach a fixed temperature following the start of the motor
Oil Tank 1 like
The storage vessel in which heating oil is held for use in the future by a furnace system that burns oil or an oil burner
Oil Varnish 4 likes
A varnish created by the combination of hard resin, drying oil, and a drier that has been thinned with an unstable solvent; evaporation dries the solvent following application, then as a result of oxidation, the oil dries
Oil-Canning 1 like
Deformation of metal panels made of thin-gauge which are attached to prevent normal thermal passage
Oil, Refrigeration 0 likes
See Refrigeration Oil
Oilcloth Varnish 0 likes
Varnish which is usually elastic and extremely flexible
Oilstone 0 likes
A piece of whetstone employed generally with oil
Oiticica Oil 1 like
A drying oil extracted from the oiticica tree nut
Old English Bond 0 likes
See English Bond
Old Growth 2 likes
Timber obtained from a mature forest; the trees are grown mostly or completely alongside their counterparts; the wood is usually straight and untangled
Olefin 0 likes
A synthetic polymer which is long-chained made of minimum 85 percent by of propylene, ethylene or other olefin components by weight; polypropylene has been manufactured as fiber for carpets
Olefin Plastics 1 like
Products of plastic nature based on resins produced from a high amount of olefins by weight; the most commonly found olefin plastics in pipe are polybutylene, polyethylene and polypropylene
Oleoresin 5 likes
A mixture of resin and an essential oil which comes from plants like softwoods
Oleoresinous Varnish 1 like
A varnish made of resin or gum mixed in a drying oil that solidifies as it mixes with the oxygen in air
Olive Knuckle Hinge 3 likes
A hinge, paumelle in nature, with knuckles that produce an oval shape
Product of the day


Detergent, alkali, acid, or another cleaning substance Solvent for cleaning paint equipment



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