plural of treader

present participle of treadmill

(biology) The apparent locomotion of certain cellular filaments by adding protein subunits at one end, and removing them at the other.

Without treads.

(US, automotive) A numerical measure of how long the tread of a tire can be expected to last.

plural of treadwheel

A wheel turned by treading, climbing, or pushing with the feet upon its periphery, as for example in a treadmill.

(architecture) A board to take a person's weight; a tread of a staircase.

plural of treadboard

(archaic) second-person singular simple present form of tread