sign of life
Proof of existence
A sign of life is any indication that someone or something is alive, active, or functioning.
Literally, it refers to breathing, movement, or pulse: The rescuers searched the rubble for signs of life.
Figuratively, it describes any response or activity from someone or something that has been silent or dormant: We haven't heard a sign of life from them in months.
Arterial blood throb
- heartbeatRhythmic cardiac contraction
- breathingPulmonary gas exchange
- movementChange in position
- warmthHeat you feel
respiration · brainwave · reflex · pupil response · blood pressure · body temperature · consciousness · responsiveness
Seeds beginning growth
- germinationSeed's initial growth phase
- buddingDeveloping from an outgrowth
- greeningEnvironmental improvement process
- tendrilCoiling plant appendage
seedling · unfurling · leafing · blossom · regrowth · revival · regeneration · first bloom
Remaining alive against odds
- rescueSave from harm
- recoveryRegaining what was lost
- reassuranceWords meant to calm
- reliefEasing of distress
miracle · answered prayer · breakthrough · turning point · good news · promise · glimmer · spark
Guiding light source
- transmissionSending of information
- radar blipSignal return indicator
- biosignatureEvidence of living processes
- infraredHeat-bearing electromagnetic waves
motion sensor · radio wave · sonar ping · distress call · SOS · flare · tracking · monitoring
Evidence of living processes
- exoplanetPlanet outside our system
- SETIQuest for cosmic signals
- astrobiologyStudy of cosmic organisms
- microbialOf microscopic organisms
extremophile · habitable zone · methane · water vapor · spectroscopy · Drake equation · Fermi paradox · alien
Arousing strong emotion
- awakeningReturn to consciousness
- recoveryRegaining what was lost
- resuscitationRestoring vital functions
- comebackRecovery after decline
rebound · resurrection · renewal · resurgence · rebirth · reanimation · restoration · second chance
pulse
Arterial blood throb
warmth · respiration · brainwave · reflex · pupil response · blood pressure · body temperature · consciousness · responsiveness · muscle twitch
sprouting
Seeds beginning growth
- germinationSeed's initial growth phase
- buddingDeveloping from an outgrowth
- greeningEnvironmental improvement process
tendril · seedling · unfurling · leafing · blossom · regrowth · revival · regeneration · first bloom · sapling
survival
Remaining alive against odds
- rescueSave from harm
- recoveryRegaining what was lost
- reassuranceWords meant to calm
relief · miracle · answered prayer · breakthrough · turning point · good news · promise · glimmer · spark · indication
beacon
Guiding light source
- transmissionSending of information
- radar blipSignal return indicator
- biosignatureEvidence of living processes
infrared · motion sensor · radio wave · sonar ping · distress call · SOS · flare · tracking · monitoring · scanner
biosignature
Evidence of living processes
- exoplanetPlanet outside our system
- SETIQuest for cosmic signals
- astrobiologyStudy of cosmic organisms
microbial · extremophile · habitable zone · methane · water vapor · spectroscopy · Drake equation · Fermi paradox · alien · Mars rover
stirring
Arousing strong emotion
- awakeningReturn to consciousness
- recoveryRegaining what was lost
- resuscitationRestoring vital functions
comeback · rebound · resurrection · renewal · resurgence · rebirth · reanimation · restoration · second chance · turnaround
sign of liferigor mortis
Postmortem muscular rigidity
death rattle · flatline · lifelessness · clinical death · corpse
sign of lifestillness
Complete lack of motion
silence · unresponsiveness · inertness · motionlessness · no response
sign of lifeabandonment
Act of leaving permanently
desolation · emptiness · void · ghost town · barrenness
sign, signs, signed, signing, signer, signal, signals, signaling, signaled