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An order of lamellibranchs having but one muscle for closing the shell, as the oyster.

Of or pertaining to the Monomya. -- n.

The laws of organic formation.

The dissection, or that part of anatomy which treats of the dissection, of muscles.

A class of peculiar organisms, the slime molds, formerly regarded as animals (Mycetozoa), but now generally thought to be plants and often separated as a distinct phylum (Myxophyta). They are found on damp earth and decaying vegetable matter, and consist of naked masses of protoplasm, often of considerable size, which…

The dissection of dead bodies; also, excision of necrosed bone. --Nec`ro*tom"ic (#), a. --Nec*rot"o*mist (#), n.

Extraction of stone from the kidney by cutting.

The dissection, or anatomy, of the nervous system.

Excision of the nymphæ.

See Economy.

Having few or imperfect syringeal muscles; -- said of some passerine birds (Oligomyodi).

The operation of dividing the navel-string.

g of an abscess, or the removal of a tumor, with a cutting instrument. [Written also onkotomy.] Dunglison.

Ovariotomy.

The operation of cutting out or removing a testicle by the knife; castration.

The anatomy or dissection of birds.

The act or art of sailing on a great circle.

The property of cutting at right angles.

The dissection or anatomy of bones; osteology.

The operation of removing one or both of the ovaries; oöphorectomy.