2. [syn: nuclear, atomic]
3. immeasurably small;
The Collaborative International Dictionary of English v.0.48:
Atomic \A*tom"ic\, Atomical \A*tom"ic*al\, a. [Cf. F. atomique.]
1. Of or pertaining to atoms.
2. Extremely minute; tiny.
Atomic bomb, see atom bomb in the vocabulary.
Atomic philosophy, or Doctrine of atoms, a system which,
assuming that atoms are endued with gravity and motion,
accounted thus for the origin and formation of all things.
This philosophy was first broached by Leucippus, was
developed by Democritus, and afterward improved by
Epicurus, and hence is sometimes denominated the Epicurean
Atomic theory, or the Doctrine of definite proportions
(Chem.), teaches that chemical combinations take place
between the supposed ultimate particles or atoms of
bodies, in some simple ratio, as of one to one, two to
three, or some other, always expressible in whole numbers.
Atomic weight (Chem.), the weight of the atom of an element
as compared with the weight of the atom of hydrogen, taken
as a standard.
WordNet (r) 3.0 (2006):
adj 1: of or relating to or comprising atoms; "atomic
structure"; "atomic hydrogen"
2: (weapons) deriving destructive energy from the release of
atomic energy; "nuclear war"; "nuclear weapons"; "atomic
bombs" [syn: nuclear, atomic] [ant: conventional]
3: immeasurably small
Moby Thesaurus II by Grady Ward, 1.0:
66 Moby Thesaurus words for "atomic":
a certain, an, any, any one, atomatic, atomiferous, atomistic,
corpuscular, cyclic, diatomic, dibasic, either, embryonic,
evanescent, exclusive, germinal, granular, heteroatomic,
heterocyclic, hexatomic, homocyclic, impalpable, imperceptible,
imponderable, inappreciable, indiscernible, individual,
indivisible, infinitesimal, intangible, integral, invisible,
irreducible, isobaric, isocyclic, isoteric, isotopic, lone,
microcosmic, microscopic, molecular, monadic, monatomic, monistic,
one, pentatomic, simple, single, singular, sole, solid, solitary,
subatomic, tenuous, tetratomic, thin, triatomic, tribasic,
ultramicroscopic, unanalyzable, undivided, uniform, unique,
unitary, unseeable, whole
The Jargon File (version 4.4.7, 29 Dec 2003):
[from Gk. atomos, indivisible]
1. Indivisible; cannot be split up. For example, an instruction may be said
to do several things ?atomically?, i.e., all the things are done
immediately, and there is no chance of the instruction being half-completed
or of another being interspersed. Used esp. to convey that an operation
cannot be screwed up by interrupts. ?This routine locks the file and
increments the file's semaphore atomically.?
2. [primarily techspeak] Guaranteed to complete successfully or not at all,
usu. refers to database transactions. If an error prevents a
partially-performed transaction from proceeding to completion, it must be ?
backed out?, as the database must not be left in an inconsistent state.
Computer usage, in either of the above senses, has none of the connotations
that ?atomic? has in mainstream English (i.e. of particles of matter,
nuclear explosions etc.).
The Free On-line Dictionary of Computing (30 December 2018):
(From Greek "atomos", indivisible) Indivisible;
cannot be split up.
For example, an instruction may be said to do several things
"atomically", i.e. all the things are done immediately, and
there is no chance of the instruction being half-completed or
of another being interspersed. Used especially to convey that
an operation cannot be interrupted.
An atomic data type has no internal structure visible to the
program. It can be represented by a flat domain (all
elements are equally defined). Machine integers and
Booleans are two examples.
An atomic database transaction is one which is guaranteed to
complete successfully or not at all. If an error prevents a
partially-performed transaction from proceeding to completion,
it must be "backed out" to prevent the database being left in
an inconsistent state.