Definition of rachitis:

part of speech: noun

The diseased state of the bone's called rickets; in bot., a disease producing abortion in the fruit or seed.

Usage examples:

• He considered that the moxa must be admitted, without contradiction, to be the remedy par excellence against rachitis James J. Walsh in "Psychotherapy".

• Of these predicted types beri- beri was the only one to be established in 1913. Scurvy has now been added to the fold and rickets or rachitis seems well on the way to acceptance though the specific vitamine absent in this case is not yet positively identified. Walter H. Eddy in "The Vitamine Manual".