Matching Words
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Protoactinium
- noun - a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
Protoceratops
- noun - small horned dinosaur
Protoorganism
- - An organism whose nature is so difficult to determine that it might be referred to either the animal or the vegetable kingdom.
Protosilicate
- - A silicate formed with the lowest proportion of silicic acid, or having but one atom of silicon in the molecule.
Protosulphide
- - That one of a series of sulphides of any element which has the lowest proportion of sulphur; a sulphide with but one atom of sulphur in the molecule.
Prototherians
- noun - primitive oviparous mammals found only in Australia and Tasmania and New Guinea
Protovertebra
- - One of the primitive masses, or segments, into which the mesoblast of the vertebrate embryo breaks up on either side of the anterior part of the notochord; a mesoblastic, or protovertebral, somite. See Illust. of Ectoderm.
Protriptyline
- noun - tricyclic antidepressant used to treat clinical depression
Protuberances
- noun - Lump
- something that bulges out or is protuberant or projects from its surroundings; "the gun in his pocket made an obvious bulge"; "the hump of a camel"; "he stood on the rocky prominence"; "the occipital protuberance was well developed"; "the bony excrescence between its horns"
- the condition of being protuberant; the condition of bulging out; "the protuberance of his belly"