molecular knife

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noun

a segment of genetic material that inhibits the reproduction of the AIDS virus by breaking up specific areas of the virus's genes.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of molecular knife

An Americanism dating back to 1990–95

I took out my knife, my Ka-Bar, and knocked his teeth out, but they fell into his throat.
The Story Behind Lee Marvin’s Liberty Valance Smile|Robert Ward|January 3, 2015|DAILY BEAST
He had a special knife designed to cut the dense loaf, and a ceremony to precede cutting the cake.
One Cake to Rule Them All: How Stollen Stole Our Hearts|Molly Hannon|December 24, 2014|DAILY BEAST
Wielding a curved knife, a young man navigates past the aging structures and into the forest.
The Congo's Forgotten Colonial Getaway|Nina Strochlic|December 18, 2014|DAILY BEAST
But in the next instant, Peters is stepping back to the table and snatching up the knife.
Synagogue Slay: When Cops Have to Kill|Michael Daly|December 10, 2014|DAILY BEAST

“Stand the f--- away from the knife right now, man,” the cop says.
Synagogue Slay: When Cops Have to Kill|Michael Daly|December 10, 2014|DAILY BEAST
Pearson flung his knife and fork at it, having forgotten to drop those light weapons when he leaped up.
Hunting the Lions|R.M. Ballantyne
Black Sheep looked up at Harry's throat and then at a knife on the dinner-table.
Kipling Stories and Poems Every Child Should Know, Book II|Rudyard Kipling
A knife would hurt, but Aunty Rosa had told him, a year ago, that if he sucked paint he would die.
Kipling Stories and Poems Every Child Should Know, Book II|Rudyard Kipling
The servant-girl came up from the kitchen, took the knife away, and consoled him.
Kipling Stories and Poems Every Child Should Know, Book II|Rudyard Kipling
Black Sheep sat at the bottom of the stairs, the table-knife in his hand, and wept for that he had not killed Harry.
Kipling Stories and Poems Every Child Should Know, Book II|Rudyard Kipling