Abstract: A multiusage thermometer comprises a body portion capable of selectively detachably engaging thereto at least a first sensing portion, a second sensing portion, a third sensing portion and a fourth sensing portion each of said sensing portions having a first engaging member at a first end thereof, said body portion integrally forming a second engaging member at one end thereof for electrically and complementarily connecting thereto said first engaging member of each of said sensing portions. This invention offers a thermometer being multiusable and having a body portion capable of being selectively detachably engaged with other sensing portions of various usages based on the situation one faces.