Related Words

Primary Root: The first root formed by a plant.

Adventitious Roots: Roots that develop from the stem following the death of the primary root. Branches from the adventitious roots form a fibrous root system in which all roots are about the same size; occur in . . . View Full Definition

Tap Root: A primary root that grows vertically downward and gives off small lateral roots; occurs in dicots. Root system in plants characterized by one root longer than the other roots. Example: carrot.

Primary Source Verification: A process through which an organization validates credentialing information from the organization that originally conferred or issued the credentialing element to the practitioner.

Primary Source: Literary scholars distinguish between primary sources, secondary sources, and educational resources. Students should also. To understand the difference, click here.

Primary Seismic Waves: The fastest set of earthquake vibrations - also known as P-waves. They move through the Earth in compression and expansion motions (much like sound waves move through air). Called primary be . . . View Full Definition

Primary Standard: A stable, high-purity material used in titrations and other chemical analyses to prepare solutions of precisely known concentration, or to determine the concentrations of substances which re . . . View Full Definition

Primary Teeth: The first set of teeth that humans get, lasting until the permanent teeth come in. Also referred to as deciduous teeth or baby teeth.

Queen of the Meadow Root (Eupatorum purpureum): Also known as gravel root or Joe-Pye Weed. Diuretic, anti-lithic, urinary infections, respiratory.

Primary Winding: That winding of a motor, transformer or other electrical device which is connected to the power source.