(chemistry) any compound of general formula R-PH₂

(scholarly studies) An original work, especially one by a notable author whose work is now the subject of commentaries (secondary sources).

The organic matter produced from carbon dioxide by photosynthesis

The dwelling where a person usually lives. A person may have only one primary residence at any given time, which is used for legal purposes such as determining where a person votes or pays taxes.

plural of primary residence. Note: the primary residence of multiple people since each person can have only one primary residence.

(law) The most serious offence of a group of offenses that a person committed at the same time, or is charged with committing at the same time.

(Britain, education) A formal, obligatory kind of school that typically begins with nursery school or first grade and ends at fifth or sixth grade.

plural of primary offense

plural of primary school

Energy in a form that has not been processed or is not processed before utilization.