| PYRETIC | • pyretic adj. Caused by, pertaining to or resulting in fever. • pyretic n. A remedy for fever. • PYRETIC adj. pertaining to fever. |
| PYRETHRIN | • pyrethrin n. (Organic chemistry) Any of a number of naturally occurring insecticides extracted from the pyrethrum… • PYRETHRIN n. either of two insecticidal oily esters prepared from pyrethrum flowers. |
| PYRETHRUM | • pyrethrum n. Any of several daisy-like perennial African plants of the genus Tanacetum, especially Tanacetum cinerariifolium. • pyrethrum n. Anacyclus pyrethrum (pellitory of Spain). • pyrethrum n. (Organic chemistry) Any of several insecticides obtained from these plants; pyrethrin. |
| PYRETHRINS | • pyrethrins n. Plural of pyrethrin. • PYRETHRIN n. either of two insecticidal oily esters prepared from pyrethrum flowers. |
| PYRETHROID | • pyrethroid n. (Organic chemistry) Any of several synthetic insecticides having a structure based on pyrethrin. • PYRETHROID n. any of various synthetic compounds related to the pyrethrins, and sharing their insecticidal properties. |
| PYRETHRUMS | • pyrethrums n. Plural of pyrethrum. • PYRETHRUM n. a name still applied to various garden flowers, esp. varieties of Chrysanthemum. |
| PYRETOLOGY | • pyretology n. A discourse or treatise on fevers; the doctrine of fevers. • PYRETOLOGY n. medical study of fevers. |
| PYRETHROIDS | • pyrethroids n. Plural of pyrethroid. • PYRETHROID n. any of various synthetic compounds related to the pyrethrins, and sharing their insecticidal properties. |
| PYRETOLOGIES | • PYRETOLOGY n. medical study of fevers. |
| PYRETOTHERAPY | • pyretotherapy n. (Obsolete, medicine) pyrotherapy. • PYRETOTHERAPY n. medical treatment by causing fever. |
| PYRETOTHERAPIES | • PYRETOTHERAPY n. medical treatment by causing fever. |