short-lived

short-lived insect

anything short-lived, as an insect that lives only for a day in its winged form

an object of extravagant short-lived passion

probably derived from baby talk n a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead n a unit of pressure equal to one newton per square meter n a Mid-Atlantic state

a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead