# Dictionary Definition

almost adv : (of actions or states) slightly
short of or not quite accomplished; `near' is sometimes used
informally for `nearly' and `most' is sometimes used informally for
`almost'; "the job is (just) about done"; "the baby was almost
asleep when the alarm sounded"; "we're almost finished"; "the car
all but ran her down"; "he nearly fainted"; "talked for nigh onto 2
hours"; "the recording is well-nigh perfect"; "virtually all the
parties signed the contract"; "I was near exhausted by the run";
"most everyone agrees" [syn: about, just about,
most, all but, nearly, near, nigh, virtually, well-nigh]

# User Contributed Dictionary

## English

### Pronunciation

### Etymology

eallmæst.### Adverb

almost- Very close
- Not quite

#### Synonyms

#### Translations

- Breton: hogos, hogozik
- Bulgarian: почти
- Chinese:
- Czech: skoro, téměř
- Danish: næsten
- Dutch: bijna, nagenoeg, vrijwel, zo goed als
- Esperanto: preskaŭ
- Estonian: Peaaegu
- Finnish: lähes, melkein
- French: presque
- German: fast
- Greek: σχεδόν (skhedón)
- Indonesian: hampir, nyaris
- Italian: quasi
- Japanese: ほとんど (hotondo)
- Korean: 거의
- Latin: paene, fere
- Latvian: gandrīz
- Maltese: kważi
- Polish: prawie
- Portuguese: quase
- Romanian: aproape
- Russian: почти (pochti)
- Slovene: skoraj
- Spanish: casi
- Swedish: nästan
- Telugu: దాదాపు, దరిదాపు
- Tok Pisin: klosap
- Ukrainian: майже (majže), сливе (slywe)
- Vietnamese: gần (như)

### Adjective

- Similar to
- They could be almost brothers.

### Noun

- Something or someone that doesn't quite make it.
- In all the submissions, they found four papers that were clearly worth publishing and another dozen almosts.

# Extensive Definition

In mathematics, especially in
set
theory, when dealing with sets of infinite size, the term
almost or nearly is used to mean all the elements except for
finitely many.

In other words, an infinite set S that is a
subset of another
infinite set L, is almost L if the subtracted set L\S is of finite
size.

Examples:

- The set S = \ is almost N for any k in N, because only finitely many natural numbers are less than k.
- The set of prime numbers is not almost N because there are infinitely many natural numbers that are not prime numbers.

This is conceptually similar to the almost
everywhere concept of measure
theory, but is not the same. For example, the Cantor set is
uncountably
infinite, but has Lebesgue
measure zero. So a real number
in (0, 1) is a member of the complement of the Cantor set
almost everywhere, but it is not true that the complement of the
Cantor set is almost the real numbers in (0, 1).

## See also

almost in German: Fast alle

almost in Esperanto: Vikipedio:Projekto
matematiko/Preskaŭ

almost in Hungarian: Majdnem

almost in Chinese: 幾乎