11-Letter Words Containing: O,P,I,A,S,_,_

• pose a threat to; present a danger to

• put at risk

• a dry dehiscent fruit that at maturity splits into two or more parts each with a single seed

• place side by side

• the prevention of disease

• construe as a real existence, of a conceptual entity

• of or relating to the hypophysis

• recite a rhapsody

• say (something) with great enthusiasm

• The arrangement of leaves on a stem, or the mathematical principles governing such arrangement.