Cissoid :: Cissoid (n.) A curve invented by Diocles, for the purpose of solving two celebrated problems of the higher geometry; viz., to trisect a plane angle, and to construct two geometrical means between two given straight lines..
Rescissory :: Rescissory (a.) Tending to rescind; rescinding.
Scissor :: Scissor (v. t.) To cut with scissors or shears; to prepare with the aid of scissors.
Scissors :: Scissors (n. pl.) A cutting instrument resembling shears, but smaller, consisting of two cutting blades with handles, movable on a pin in the center, by which they are held together. Often called a pair of scissors..
Scissors-tailed :: Scissors-tailed (a.) Having the outer feathers much the longest, the others decreasing regularly to the median ones..
Scissorstail :: Scissorstail (n.) A tyrant flycatcher (Milvulus forficatus) of the Southern United States and Mexico, which has a deeply forked tail. It is light gray above, white beneath, salmon on the flanks, and fiery red at the base of the crown feathers..