noun
definition
Any weapon that causes death.
definition
An allele that causes the death of the organism that carries it.
adjective
definition
Deadly; mortal; fatal.
Examples of lethal in a Sentence
The Watcher took a step back at his lethal tone.
Hydrocyanic acid is a protoplasmic poison, directly lethal to all living tissues, whether in a plant or an animal.
If his sudden stillness wasn't a warning, his purr turned to a low, lethal growl.
A full head smaller than him, Darkyn was nonetheless the most lethal creature Gabriel had ever known.
His tone was soft but lethal.
Lean and youthful, he was unthreatening in appearance but the single most lethal creature Gabriel knew.
In large toxic and in lethal doses the activity of the spinal cord is lowered.
The unit of antitoxin in Ehrlich's new standard is the amount requisite to antagonize i oo times the minimum lethal dose of a particular toxin to a guinea-pig of 250 grm.
If you cause more damage, Darkyn said in a soft, lethal voice.
Whilst quinine possesses this power, however, it is far more potently lethal to a particular form of animal organism known as the plasmodium malariae.
Deidre had never seen him like this, as a quietly commanding figure, capable of lethal force one moment and gentle kisses the next.
It is also to be noted that, as in the case of poisons of known constitution, each toxin has a minimum lethal dose which is proportionate to the weight of the animal and which can be ascertained with a fair degree of accuracy.
He kept his voice low, lethal, and stopped just short of their bodies touching.
The light in his eyes was lethal.
The patient who has swallowed a toxic or lethal dose of laudanum, for instance, usually passes at once into the narcotic state, without any prior excitement.
With astonishing agility, the Grey God outmaneuvered lightening, weaving through the bursts of purple fire in a lethal dance.
Jones is chased by South American aborigines, escapes death by blowdart, springs numerous lethal deathtraps and steals a horse to chase a truck convoy.
In the wrong hands these can also prove lethal.
She watched him move, his swordplay as graceful and fluid as it was lethal.
As sweet as she is, I almost wish I'd given her something a little less lethal.
The scary, confusing world she.d entered weeks before crystallized and grew clear as she watched the lethal battle.
He'd taught her a few things during the two weeks he toyed with her, among them, how to combine her flexibility and speed into something more lethal.
It is by no means the most powerful poison known, for such an alkaloid as pseud-aconitine, which is lethal in dose of about 1/200 of a grain, is some hundreds of times more toxic, but prussic acid is by far the most rapid poison known, a single inhalation of it producing absolutely instantaneous death.
They are based on the experimental toxic, as distinguished from lethal dose.
For example, the amount necessary to neutralize five times the lethal dose being determined, twenty times that amount will neutralize a hundred times the lethal dose.
If such were the condition there would always be a certain amount both of free toxin and of free antitoxin in the mixture, and in this case also considerably more than a dose of toxin would have to be added to a " neutral mixture " before the amount of free toxin was increased by a dose, that is, before the mixture became lethal.
He stated that he wished his deputies to respond to the threat of lethal violence with "disconcerting alacrity."
She was given a lethal dose of potassium chloride.
The distinguishing feature of all arthropods is the chitinous exoskeleton (Barnes, 1987 ), thus teflubenzuron is lethal to them all.
Kahn found high levels of lethal toxins in Frost's fatty tissue.
Some species of palm are susceptible to diseases, such as Lethal Yellowing, that cannot be treated.
It would appear that your car has positive camber on the rear which is lethal.
Adolf Hitler used Blondi to make sure cyanide capsules were lethal.
The most common form of sudden cardiac arrest is due to ventricular fibrillation - a rapid, chaotic, lethal rhythm of the heart.
Things look bad for Julie when her worst enemy forces her to drink a potentially lethal cocktail.
They produce dioxins, among the most lethal known substances.
They soon discover they just did... ' For lots of lethal violence involving high-tech weaponry.
A nurse was sentenced to 12 months imprisonment after breaking into a hospital computer and altering a patient's prescription to a lethal dose.
Parke controls most of the rallies, but Jonathan succeeds to place a few lethal backhand drop shots to equalize at 6/6.
In the past distress flares, which can be lethal in the wrong hands, have been taken.
The grenade, tho less powerful than a standard fragmentation grenade, has a lethal radius of 5m.
That black gunk is lethal, and ought to incapacitate anybody.
Lethal Vehicles - Gamers control menacing Battle Walkers that stalk the land and futuristic gunships that patrol the skies.
They are due to be killed by lethal injection in a few weeks time.
The researchers ' next step was to make this peptide lethal by attaching it to another peptide that promoted cell suicide.
The aim is to prevent potentially lethal weapons falling into the hands of children.
It also concentrates heat in one area with possibly lethal consequences for the pulp.
This is the best way to catch malaria, a sometimes lethal disease which has not ceased to be omnipresent in Ivory Coast.
Unbeknownst to either of them, a killer had dropped a highly lethal addition into Harriet's cold drink.
It's a pretty lethal weapon in inexperienced hands.