English dictionary: words starting with proto - page 2

verb

Transfer a proton to (a molecule, group, or atom) which forms a coordinate bond to the proton.

Usage examples:

The acid environment favours conversion of these anions to their protonated uncharged form

verb

Transfer a proton to (a molecule, group, or atom) which forms a coordinate bond to the proton.

Usage examples:

The acid environment favours conversion of these anions to their protonated uncharged form

noun

The juvenile form of a bryophyte (usually consisting of a branched filamentous structure, but sometimes flat or platelike), developing on the germination of a spore and producing buds from which the adult plants arise.

adjective

Of or relating to a protonema.

adjective

= protonemal .

adjective

Of or relating to a protonephridium; that is a protonephridium.

noun

A branched, blind-ended nephridium containing flame cells (as in flatworms and nemertines) or solenocytes (as in some annelids); a nephridium of this type found in the larvae of other animal groups.

noun

= pronephros .

noun

A chief clerk in some law courts, originally in the byzantine court.

Usage examples:

Oh, you'll tell me the protonotaries and clerks of the court are writers too.

noun

A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.

Usage examples:

Overall, atoms are neutral and the number of protons in their nuclei equals the number of electrons.

noun

The first person or thing of a certain name; something from which another person or thing takes its name.

noun

The first nymphal stage in the life cycle of certain chelicerate arthropods, especially mites and pseudoscorpions.

adjective

Of or relating to a protonymph.

noun

Especially in the byzantine empire: a senior cleric granted jurisdiction over members of the greek orthodox church.

noun

Especially in the byzantine empire: a senior cleric granted jurisdiction over members of the greek orthodox church.

adjective

Relating to or denoting those sensory nerve fibres of the skin which are capable of discriminating only between relatively coarse stimuli, chiefly heat, cold, and pain.

Usage examples:

An alternate explanation for the finding is protopathic bias, which can arise in situations where m…

noun

A water-insoluble pectic substance containing glucuronic acid monomers, which is present as a binding substance between plant cell walls, and which breaks down during the ripening of fruits and fleshy roots, giving rise to pectin.

noun

A pectinase that converts protopectin to a soluble form by hydrolysis.

noun

The first-formed elements of the primary phloem, the cells of which mature before the elongation of the surrounding plant tissue.

noun

In a clubmoss: a primitive leaf-like structure produced on the upper surface of the protocorm or tuber.

noun

With singular or plural agreement. a class of primitive plants or plantlike organisms regarded as forming the lowest division of the vegetable kingdom (corresponding to the protozoa in the animal kingdom), specifically one comprising unicellular and other simple green algae. also, with plural agreement (also protophyta): such plants and organisms collectively.

noun

An organism belonging to the class protophyta; especially a unicellular alga.

adjective

Belonging or relating to the class protophyta.

noun

A white crystalline alkaloid present in many plants, especially of the families papaveraceae and fumariaceae.

noun

A large body of matter in orbit around the sun or a star and thought to be developing into a planet.

Usage examples:

This analysis supported the view that the moon originated from a glancing collision between the ear…