a quantity of no importance; "it looked like nothing I had ever seen before"; "reduced to nil all the work we had done"; "we racked up a pathetic goose egg"; "it was all for naught"; "I didn't hear zilch about it"
in no way; to no degree; "he looks nothing like his father"
a chemical substance derivable from a mold or bacterium that kills microorganisms and cures infections; "when antibiotics were first discovered they were called wonder drugs"
a substance that destroys micro-organisms that carry disease without harming body tissues
(extended sense) of exceptionally clean language; "lyrics as antiseptic as Sunday School"
clean and honest; "antiseptic financial practices"
thoroughly clean and free of or destructive to disease-causing organisms; "doctors in antiseptic green coats"; "the antiseptic effect of alcohol"; "it is said that marjoram has antiseptic qualities"
made free from live bacteria or other microorganisms; "sterilized instruments"
freeing from error or corruption; "the antiseptic effect of sturdy criticism"
a major part of the central nervous system which conducts sensory and motor nerve impulses to and from the brain; a long tubelike structure extending from the base of the brain through the vertebral canal to the upper lumbar region
the junction between two neurons (axon-to-dendrite) or between a neuron and a muscle; "nerve impulses cross a synapse through the action of neurotransmitters"
(virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic; a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein
a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer; "a true virus cannot spread to another computer without human assistance"
a harmful or corrupting agency; "bigotry is a virus that must not be allowed to spread"; "the virus of jealousy is latent in everyone"