The noun YO-YO has 1 sense: 1  1. a toy consisting of a spool that is reeled up and down on a string by motions of the hand. 2  Meaning: 3  A toy consisting of a spool that is reeled up and down on a string by motions of the hand. 4  Classified under: 5  Nouns denoting man-made objects. 6  Hypernyms (yo-yo is a kind of...):
Malathion is a pesticide that is widely used in agriculture, residential landscaping, public recreation areas, and in public health pest control programs such as mosquito eradication.In the US, it is the most commonly used organophosphate insecticide.alathion is a pesticide that is widely used in agriculture, residential landscaping, public recreation areas, and in public health pest control programs such as mosquito eradication.
That makes malathion a probably carcinogenic to humans, said the study appearing on the website of Lancet Oncology. (www.thelancet.com/oncology). Malathion was linked to a risk of non-Hodgkin lymphoma in Canada, the United States and Sweden and to prostate cancer in one Canadian study, the IARC said. It added, however, that the study involved tests on rats and mice in laboratories and that no cases had been recorded in humans.