Prefix: Affix which is placed before the stem of a word
A prefix is a part of a word or a word, within a word.
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It is put at the start of another word to make a different meaning. It can also mean a number that is put in at the start to show which number something is in a group. It is a type of affix. compound nouns (in other cases also compound adjectives).
The following examples illustrate real prefixes.
Often people want to use a prefix to mean not. There are many prefixes that mean not.
- Unnatural means not natural.
- Apolitical means not political.
- Nonviolent means not violent.
- Indirect means not direct
We also learnt the prefixes anti which means against and auto is used to mean self or own
Some examples of these prefixes:
antisocial which means non social
anti glare which means it will prevent sun and light glare on a screen
autograph which means a person's signature
autopilot which means working by itself
Other examples of prefixes:
- bicentennial (and other number related prefixes: mono, ter/tri, tetra, quadro, penta, hepta, octo, nano etc.)
- contradiction
- encompass
- paratrooper
- percent
- periscope
- prototype
- polytechnical
- react
- semicolon
Scientists and doctors use prefixes in many words.
- Hepato- is a prefix that means liver. So hepatocellular means 'about liver cells'.
- Hydro- is a prefix that means water. So Hydroelectric dams are dams that make electricity from the flow of water.
- Pre- or Ante- are prefixes that mean before. Prenatal diagnostics is the diagnostics done before the birth of a baby.
- Post- is a prefix that means after. Post-traumatic experience would be an experience that was made after trauma.
Sometimes people make up words by adding a prefix. These words are not in a dictionary. But if people use these words enough, sometimes they go into dictionaries. For example, we can make the word unsimple, which splits up into not simple. This is not a word in a dictionary.
Compare to suffix. Suffixes are letters put at the end of a word to change its meaning.
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