See Also: racket-ball(dictionary)
Petri dish(dictionary)
Petri dish(dictionary)
petri dish(medicine)
Petri, Julius(medicine)
racket(medicine)
Racket(money)
racket(4)(dictionary)
racket(3)(dictionary)
racket(2)(dictionary)

Petri dish (oh) and racket-ball (iou)


Petri dish (oh)



a small clear dish with a cover which is used by scientists, especially for growing bacteria

racket-ball (iou)



racket-ball noun. Also (the usual form in sense 2) racquetball. M17.
[from RACKET noun1 + BALL noun1.]
A small hard (orig. kid-covered) ball of cork and string; a game of rackets played with this. M17.
spec. A game played with a small hard ball and a short-handled racket in a four-walled handball court. Orig. & chiefly N. Amer. L20.