13-letter words containing p, r, i, g, s, m
- sempstressing — the profession of being a seamstress
- sheep farming — agriculture: sheep raising
- shipping room — a place in a business concern where goods are packed and shipped.
- slipstreaming — Aeronautics. the airstream pushed back by a revolving aircraft propeller. Compare backwash (def 2), wash (def 31).
- sperm washing — a technique that separates sperm from the seminal fluid, used especially for isolating active sperm for artificial insemination.
- spermatangium — the organ that produces spermatia in red algae.
- spermatogenic — relating to the development of spermatozoa
- spurge family — the large plant family Euphorbiaceae, characterized by herbaceous plants, shrubs, and trees having milky juice, simple alternate leaves or no leaves, usually petalless flowers often with showy bracts, and capsular fruit, and including cassava, croton, crown-of-thorns, poinsettia, snow-on-the-mountain, spurge, and the plants that produce castor oil, rubber, and tung oil.
- superorganism — a form of life composed of mutually interdependent parts that maintain various vital processes.
- supreme being — God.
- thigmotropism — oriented growth of an organism in response to mechanical contact, as a plant tendril coiling around a string support.
- trading stamp — a stamp with a certain value given as a premium by a retailer to a customer, specified quantities of these stamps being exchangeable for various articles.
- unpromisingly — in a manner that is not showing any promise of favourable development or future success
- zoosporangium — a sporangium or spore case in which zoospores are produced.