12-letter words containing i, m, p, e, r, s
- spermatocide — spermicide.
- spermatozoid — a motile male gamete produced in an antheridium.
- spermogonium — one of the cup-shaped or flask-shaped receptacles in which the spermatia of certain fungi and red algae are produced.
- spermophytic — able to produce seed
- spray millet — the seeds of millet left on the spike and sold in pet shops for cage birds.
- sprechstimme — sprechgesang.
- stem reptile — any member of the extinct order Cotylosauria, comprising heavy-bodied, splay-limbed, plant-eating reptiles that arose during the Carboniferous Period and that are considered to include the ancestors of all other reptiles.
- streptomycin — an antibiotic, C 2 1 H 3 9 N 7 O 1 2 , produced by a soil actinomycete, Streptomyces griseus, and used in medicine in the form of its white, water-soluble sulfate salt, chiefly in the treatment of tuberculosis.
- striped drum — a North American marine and freshwater sciaenid fish, Equetus pulcher, that utters a drumming sound
- subepidermal — just below the epidermis or skin
- supereminent — of superior eminence, rank, or dignity; distinguished, conspicuous, or worthy of note above others.
- superimposed — (of a stream or drainage system) having a course not adjusted to the structure of the rocks presently undergoing erosion but determined rather by a prior erosion cycle or by formerly overlying rocks or sediments.
- superkingdom — in some systems of biological classification, either of the two major subdivisions, prokaryote or eukaryote, into which all living organisms can be placed
- superluminal — appearing to travel faster than the speed of light.
- supermassive — (of a black hole or star) having a mass in the range of millions or billions of times that of the sun
- supermaxilla — the upper jaw.
- superpremium — a prize, bonus, or award given as an inducement, as to purchase products, enter competitions initiated by business interests, etc.
- superrealism — photorealism.
- suspensorium — a part that supports or suspends, esp the mandibular suspensorium, which suspends the lower jaw from the skull
- thermosiphon — an arrangement of siphon tubes that enables water in a heating apparatus to circulate by means of convection.
- transumptive — of or relating to transumption
- tryparsamide — a white, crystalline powder, C 8 H 10 O 4 N 2 AsNa·½H 2 , used chiefly in treating African sleeping sickness.
- unimpressive — having the ability to impress the mind; arousing admiration, awe, respect, etc.; moving; admirable: an impressive ceremony; an impressive appearance.
- unimprisoned — not confined in a prison
- watermanship — the skill, duties, business, etc., of a waterman.
- xiphisternum — The lowest part of the sternum; the xiphoid process.