The act of constricting, the state of being constricted, or something that constricts. / A narrow part of something; a stricture. / A compression.

A large tropical American snake, Boa constrictor, that kills its prey by squeezing them. / (formerly) Any large python.

The amount of incoming solar radiation per unit area, measured on the outer surface of Earth's atmosphere, in a plane perpendicular to the rays.

Difficulty in expressing in words what one wants to say, especially if one has much to say.

(mathematics) A function whose value is the same for all the elements of its domain.

(transitive) To cause constipation in. / (obsolete) To pack or crowd together.

(astronomy) A constellation that is only above the horizon (and thus visible) for part of the year.

having the power or authority to constitute, establish or enact something / having the power or authority to appoint someone to office / extremely important, essential

(mathematics) A characteristic of an exponential function, represented by τ in the function:

An apparent memory of an event that did not actually happen, unconsciously constructed to fill a gap.