pollen : Idioms & Phrases

• noun the number of pollen grains (usually ragweed) in a standard volume of air over a twenty-four hour period and a specified time and place
  

WordNet

• (Bot.), a particle or call of pollen.

Webster 1913

• a pollinium. Gray.

Webster 1913

• a compartment of an anther containing pollen, usually there are four in each anther.

Webster 1913

• noun (botany) a slender tubular outgrowth from a pollen grain when deposited on the stigma for a flower; it penetrates the style and conveys the male gametes to the ovule
  

WordNet

• a slender tube which issues from the pollen grain on its contact with the stigma, which it penetrates, thus conveying, it is supposed, the fecundating matter of the grain to the ovule.

Webster 1913

• noun pollen of the ragweed plant is a common allergen
  

WordNet