Change in the value of one particular property based on the value of a comparable property. Adjustment in the appraisal of a comparable property will then affect the value of the original property.
Admixture
A material other than water, aggregates, or hydraulic cement, used as an ingredient of grout or mortar and which is added immediately before or during its mixing.
Adobe
Unburnt brick dried in the sun, commonly used for building in the American Southwest, Spain and Latin America. Usually covered with stucco in homes.
Adsorbent
A material, usually solid, capable of holding gases, liquids and/or suspended matter at its surface and in exposed pores. Activated carbon is a common adsorbent used in water treatment.
Adsorption
The process in which matter adheres to the surface of an adsorbent.
Adventitious
Having growth from places where normally growth does not occur (i.e. if a stem is buried and a plant will grow.).
Adventitious plant
A young plant that develops in an asexual manner on the leaves or stems of the mother plant. (Kolanchoe are good examples of this.).
Aeration
Act of combining substance with air.
Aerator
A device screwed into the end of a faucet spout that mixes air into flowing water, and controls flow to reduce splashing. It sometimes contains a baffle to reduce flow to 2.5 gpm.
Aerial root
A root which grows out from the stem above ground level. Aerial roots are commonly seen on mature specimens of Monstera deliciosa.
