13-letter words containing r, i, g, o, u, s
- sub-sovereign — a monarch; a king, queen, or other supreme ruler.
- subcategorize — to split into subcategories
- subgeneration — a generation within another generation
- sugar of milk — lactose.
- superorganism — a form of life composed of mutually interdependent parts that maintain various vital processes.
- superregional — involving many regions
- surgical boot — a specially designed boot or shoe that compensates for deformities of the foot or leg
- toothbrushing — the act or method of cleaning the teeth with a toothbrush.
- torsion group — a group in which every element has finite order.
- trout fishing — angling to catch trout
- tumorigenesis — the production or development of tumors.
- unconsidering — not reflective or thoughtful
- understocking — to provide an insufficient quantity, as of merchandise, supplies, or livestock.
- undiscouraged — to deprive of courage, hope, or confidence; dishearten; dispirit.
- unprogressive — favoring or advocating progress, change, improvement, or reform, as opposed to wishing to maintain things as they are, especially in political matters: a progressive mayor.
- unpromisingly — in a manner that is not showing any promise of favourable development or future success
- uprighteously — in an upright or moral manner
- virgo cluster — a cluster of about 2500 galaxies in the constellation Virgo, the nearest cluster to our galaxy.
- volute spring — a coil spring, conical in shape, extending in the direction of the axis of the coil.
- willow grouse — a N European grouse, Lagopus lagopus, with a reddish-brown plumage and white wings: now regarded as the same species as the red grouse (L. lagopus scoticus) of Britain
- zoosporangium — a sporangium or spore case in which zoospores are produced.