Most antifreeze solutions contain high levels of ethylene glycol, an ingredient that, once metabolized, is extremely toxic to dogs and cats. Pets are often attracted to the liquid because of its sweet taste. Even small amounts can be lethal to animals.
Wiktionary(0.00 / 0 votes)Rate this definition: arduous(Adjective) Needing or using up much energy; testing powers of endurance. The movement towards a peaceful settlement has been a long and arduous political struggle.
Usage Note: Although tortuous and torturous both come from the Latin word torquÄre, to twist, their primary meanings are distinct. Tortuous means twisting (a tortuous road) or by extension complex or devious. Torturous refers primarily to torture and the pain associated with it. However, torturous also can be used in the sense of twisted, strained, belabored and tortured is an even stronger synonym: a tortured analogy.