Longman Dictionary of Contemporary English
The Collaborative International Dictionary
bio- \bi"o-\ pref. a prefix meaning of or pertaining to life, produced by living things, etc.
Douglas Harper's Etymology Dictionary
word-forming element, from Greek bio-, comb. form of bios "one's life, course or way of living, lifetime" (as opposed to zoe "animal life, organic life"), from PIE root *gweie- (1) "to live" (cognates: Sanskrit jivah "alive, living;" Old Persian *jivaka- "alive," Middle Persian zhiwak "alive;" Old English cwic, cwicu "living, alive;" Latin vivus "living, alive," vita "life;" Old Church Slavonic zivo "to live;" Lithuanian gyvas "living, alive," gyvata "(eternal) life;" Old Irish bethu "life," bith "age;" Welsh byd "world"). The correct usage is that in biography, but in modern science it has been extended to mean "organic life."
Wiktionary
pre. 1 life 2 organic life
Usage examples of "bio-".
Just as whispers had reached him that Alberto Colon, who had died from mysterious causes last month, was El Tio's first pigeon to die from a precision bio-strike.
He felt the whickering lightning of energy weapons like heated irons, Engineering no longer responded—not surprisingly—and he'd lost both Bio-Control One and Three.
The bridge officer program includes sensory boosters, neural feeds for computer interface, command authority authentication patterns, Fleet communicator and bio-sensor implants, skeletal reinforcement, muscle and tissue enhancement, and standard hygienic, immunization, and tissue renewal treatments.
He was ready, and he strolled out of the armory towards the ready room, glad that he and only he could read the adrenalin levels reported by the bio-sensors in everyone else's implants.
Something had hit him in the chest, hard enough to crack even bio-enhanced ribs, but the dished-in armor had held, though Colin didn't like the way the old Imperial was favoring his left side.
He couldn't read her bio-read-outs through her badly damaged armor, and he lifted her in his arms, calling her name and peering into her helmet visor in desperation.
The destruction of all life on the planets we have so far encountered was due to a bio-weapon.
The bio-weapon appears to have been designed to mount a broad-spectrum attack upon a wide range of life forms.
Obviously we do not have a specimen of the weapon itself, but I have retrieved very limited data from Governor Yirthana's own bio-staff.
There was no trace of anything which could possibly be the bio-weapon aboard the battle station, and Chernikov had gathered up every specimen of technology he could find.
The weapon which destroyed them certainly appears to evidence a very high level of bio-engineering.
The bio-weapon itself has died, at least on Keerah and, by extension, upon any planet which was contaminated an equivalent length of time ago.
Three, logic suggests the bio-weapon there will be as dead as it is here.
Damage to the Indian Ocean bio-system will be severe but, according to the projections, not irrecoverable.
A bolt of pain shot through his left arm as a bio-probe of pure force snipped away a scrap of tissue, but it was tiny compared to the fury boiling into his brain through his neural feed.