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English prefixes are affixes (i.e., bound morphemes that provide lexical meaning) that are added before either simple roots or complex bases (or operands) consisting of (a) a root and other affixes, (b) multiple roots, or (c) multiple roots and other affixes. Examples of these follow:
Adding a prefix to the beginning of an English word changes it to a different word. For example, when the prefix un-is added to the word happy, it creates the word unhappy. The word prefix is itself made up of the stem fix (meaning "attach", in this case), and the prefix pre-(meaning "before"), both of which are derived from Latin roots.
Meaning Origin language and etymology Example(s) -iasis: condition, formation, or presence of Latin -iasis, pathological condition or process; from Greek ἴασις (íasis), cure, repair, mend mydriasis: iatr(o)-of or pertaining to medicine or a physician (uncommon as a prefix but common as a suffix; see -iatry)
The English language uses many Greek and Latin roots, stems, and prefixes. These roots are listed alphabetically on three pages: Greek and Latin roots from A to G; Greek and Latin roots from H to O; Greek and Latin roots from P to Z. Some of those used in medicine and medical technology are listed in the List of medical roots, suffixes and ...
The following is an alphabetical list of Greek and Latin roots, stems, and prefixes commonly used in the English language from P to Z. See also the lists from A to G and from H to O . Some of those used in medicine and medical technology are not listed here but instead in the entry for List of medical roots, suffixes and prefixes .
A directional meaning usually involves motion in a particular direction ("Kay went to the store"), the direction in which something leads or points ("A path into the woods"), or the extent of something ("The fog stretched from London to Paris"). A static meaning indicates only a location ("at the store", "behind the chair", "on the moon").
Prefix meaning "under" or "lower". From Gr. hypo. [192] hypothallus. protothallus. 1. (Of lichens) The first growth of the hyphae, before differentiation has taken place. Usually of a crustaceous lichen's earliest stage, lacking a cortex and photobiont. Often persists as a colored layer on the bottom of the later stages of maturation. 2.
Prefix and suffix may be subsumed under the term adfix, in contrast to infix. [5] When marking text for interlinear glossing, as shown in the third column in the chart above, simple affixes such as prefixes and suffixes are separated from the stem with hyphens. Affixes which disrupt the stem, or which themselves are discontinuous, are often ...