English dictionary: words starting with prot - page 10

noun

Originally: an early stage in fungal spore development believed to be analogous to the prothallus in ferns. in later use: specifically a uninucleate segment formed by the cleavage of a multinucleate mass of cytoplasm from which the spore or sporangium develops.

noun

A contracting mass of gas which represents an early stage in the formation of a star, before nucleosynthesis has begun.

Usage examples:

Elongated chains of dust grains like these appear in the early stages of planet formation around a …

noun

A type of stele typical of primitive plants (still found in, e.g., the seedling stages of many ferns) that lacks pith and consists of a solid core of xylem surrounded by a cylinder of phloem.

adjective

Of or relating to a protostele; possessing a protostele.

noun

A multicellular organism whose mouth develops from a primary embryonic opening, such as an annelid, mollusc, or arthropod.

Usage examples:

These animals are all protostomes - the mouth develops before the anus in the young embryo - and th…

noun

A sulphate in which the sulphate anion occurs in its smallest possible proportion relative to the other element (i.e. one in which the other element occurs in its lowest oxidation state). compare "proto-", persulphate .

noun

(in a stony coral) a cup-shaped basal skeletal plate which is formed at the start of the development of the colony.

noun

The first element in a dithematic name.

noun

Prototherian.

plural noun

A group of mammals that comprises the monotremes and their extinct relatives.

Usage examples:

They are often placed in a separate subclass from other mammals, prototheria.

noun

A mammal of the group prototheria, which comprises the monotremes and their extinct relatives.

Usage examples:

Extant mammals, including prototherians (egg-laying mammals) and therians (marsupial and placental …

adjective

Relating to or denoting prototherians.

Usage examples:

They had a common ancestor more recently than either had with the monotremes or, probably, any othe…

noun

A first or early traitor; a person who has the potential to become a traitor.

noun

(in a trochophore larva) a ring of cilia encircling the body posterior to the apical tuft.

noun

A prototrophic microorganism.

adjective

Of a microorganism: able to grow in a simple artificial medium without the specific supplementary nutrition required by an auxotrophic counterpart, especially as a result of genetic reversion to the wild-type condition.

noun

The state or condition of being a prototroph.

noun

A first or preliminary version of a device or vehicle from which other forms are developed.

Usage examples:

The firm is testing a prototype of the weapon

verb

Make a prototype of (a product).

Usage examples:

Mercedes is prototyping a car sunroof which changes from clear to tinted

verb

Make a prototype of (a product).

Usage examples:

Mercedes is prototyping a car sunroof which changes from clear to tinted

noun

A first or preliminary version of a device or vehicle from which other forms are developed.

Usage examples:

The firm is testing a prototype of the weapon

noun

A first or preliminary version of a device or vehicle from which other forms are developed.

Usage examples:

The firm is testing a prototype of the weapon

verb

Make a prototype of (a product).

Usage examples:

Mercedes is prototyping a car sunroof which changes from clear to tinted

adjective

Denoting the first, original, or typical form of something.

Usage examples:

The prototypical vehicle

adverb

In a way that is extremely typical of something

Usage examples:

She spent her early years in a prototypically quaint yorkshire village., my father’s relatives have…

verb

Make a prototype of (a product).

Usage examples:

Mercedes is prototyping a car sunroof which changes from clear to tinted

noun

A first or preliminary version of a device or vehicle from which other forms are developed.

Usage examples:

The firm is testing a prototype of the weapon

noun

A chief printer; specifically the first major printer in a city, country, etc.

noun

Each of the segments of the embryonic mesoderm which subsequently develop into the vertebrae and associated muscles. formerly also: †a myotome, regarded as having a similar role (obsolete).

noun

The chief official in charge of a vestiary or wardrobe in a palace or other large establishment.