energy; vigour; vigor; liveliness; spirit; life
lively; active; vigorous; animated; brisk
stimulation (e.g. of an economy); revitalization (e.g. of a town); rejuvenation; activation
to become animated; to liven up; to become active
increase in activity; activation
letterpress printing; moveable type printing
activity; briskness; prosperity
to animate; to liven up; to cheer up
vivid description; painting a lively picture (of)
reactive oxygen (i.e. free radicals, which can be destructive at high concentrations)
dull; slow; sluggish; inactive; inanimate; quiet
the power of life or death
activated charcoal; activated carbon
biologically active substance
being full of vitality (energy); vigorous and in high spirits
being full of vitality (energy); in exuberant spirits; effervescent; ebullient
tissue plasminogen activator; tPA; PLAT
surface-active agent; surfactant
fluorochemical surfactant; fluorine-based surfactant