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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

causal agent, cause, causal agency go
any entity that produces an effect or is responsible for events or results

agent
an active and efficient cause

noun.object

18 Subcategories

vasoconstrictor, vasoconstrictive, pressor go
any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs
biological agent, biohazard go
any bacterium or virus or toxin that could be used in biological warfare
eliminator go
an agent that eliminates something
impairer go
an agent that impairs
infectious agent, infective agent go
an agent capable of producing infection
lethal agent go
an agent capable of causing death
motor go
a nonspecific agent that imparts motion
mutagen go
any agent (physical or environmental) that can induce a genetic mutation or can increase the rate of mutation
quickener, invigorator, enlivener go
an agent that gives or restores life or vigor
relaxer go
any agent that produces relaxation
repressor, represser go
an agent that represses
retardation, retardant, retardent go
any agent that retards or delays or hinders
satisfier go
any agent capable of producing satisfaction
shortener go
any agent that shortens
stressor go
any agent that causes stress to an organism
teratogen go
any agent that interferes with normal embryonic development: alcohol or thalidomide or X-rays or rubella are examples
vector, transmitter go
any agent (person or animal or microorganism) that carries and transmits a disease
weakener go
that which weakens or causes a loss of strength