Definify.com

Webster 1913 Edition


Proto-

Pro′to-

.
[Gr.
πρῶτοσ
first, a superl. fr.
πρό
before. See
Pro-
.]
1.
A combining form prefix signifying first, primary, primordial;
as,
proto
martyr, the first martyr;
proto
morphic, primitive in form;
proto
plast, a primordial organism;
proto
type,
proto
zoan.
2.
(Chem.)
(a)
Denoting the first or lowest of a series, or the one having the smallest amount of the element to the name of which it is prefixed; as protoxide, protochloride, etc.
(b)
Sometimes used as equivalent to mono-, as indicating that the compound has but one atom of the element to the name of which it is prefixed. Also used adjectively.

Definition 2024


proto-

proto-

See also: proto, protó, and pro to

English

Alternative forms

Prefix

proto-

  1. first
  2. (linguistics, genetics) most recent common ancestor (often hypothetical) of
    All Indo-European languages from Albanian to Zazaki are descended from Proto-Indo-European.
  3. (chemistry) Relating to protons and/or positive charge.

Synonyms

Coordinate terms

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:English_words_prefixed_with_proto-'>English words prefixed with proto-</a>

Translations


French

Etymology

From Ancient Greek πρῶτος (prôtos, first).

Prefix

proto-

  1. proto-

Italian

Etymology

From Ancient Greek πρωτο- (prōto-), combining form of πρῶτος (prôtos, first), superlative of πρό (pró, before).

Prefix

proto-

  1. proto-

Usage notes

  • Also prot- before a vowel.

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Italian_words_prefixed_with_proto-'>Italian words prefixed with proto-</a>

Latvian

Etymology

From Ancient Greek πρωτο- (prōto-), combining form of πρῶτος (prôtos, first), superlative of πρό (pró, before).

Prefix

proto-

  1. proto- (initial, first, original)

Usage notes

  • Also prot- before a vowel

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Latvian_words_prefixed_with_proto-'>Latvian words prefixed with proto-</a>

Spanish

Etymology

From Ancient Greek πρωτο- (prōto-), combining form of πρῶτος (prôtos) "first", superlative of πρό (pró) "before".

Prefix

proto-

  1. proto-

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Spanish_words_prefixed_with_proto-'>Spanish words prefixed with proto-</a>