contagious -
adj. 1 a (of a person) likely to
transmit disease by contact. b (of a disease) transmitted in this way.
2 (of emotions, reactions, etc.) likely to affect others (
contagious enthusiasm).
contagious abortion brucellosis of cattle.
contagiously adv. contagiousness n. [ME f. LL contagiosus (as contagion)]
