different between concentrator vs oxygen

English

Etymology

concentrate +? -or

Noun

concentrator (plural concentrators)

1. One who concentrates.
   • 1960, Dissertation Abstracts (volume 20, page 4007)

     Experienced classroom teachers are well acquainted with the attention-seeker, the shy girl, the aggressive boy, the poor concentrator, the slow student […]

2. (telecommunications) A hub.
3. (mining) An apparatus for the separation of dry comminuted ore, by exposing it to intermittent puffs of air.

   (Can we find and add a quotation of Knight to this entry?)

4. (firearms) A frame or ring of wire or hard paper fitting into the cartridge case used in some shotguns, and holding the shot together when discharged, to secure close shooting; also, a device for slightly narrowing the bore at the muzzle for the same purpose.

English

Etymology

Borrowed from French oxygène (originally in the form principe oxygène, a variant of principe oxigine ‘acidifying principle’, suggested by Lavoisier), from Ancient Greek ???? (oxús, “sharp”) + ????? (génos, “birth”), referring to oxygen's supposed role in the formation of acids.

Pronunciation

• enPR: ?k's?j?n, IPA^(key): /??ks?d??n/

Noun

oxygen (countable and uncountable, plural oxygens)

2. The chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994. It is a colorless and odorless gas.

   Hypernym: chalcogen

3. Molecular oxygen (O₂), a colorless, odorless gas at room temperature, also called dioxygen.
4. (medicine) A mixture of oxygen and other gases, administered to a patient to help them breathe.
5. (countable) An atom of this element.
   • 2013, Spencer L. Seager, Michael R. Slabaugh, Chemistry for Today: General, Organic, and Biochemistry (page 479)

     Look first at any structure to see if there is a carbon with two oxygens attached. Hemiacetals, hemiketals, acetals, and ketals are all alike in that regard.

6. (figuratively) A condition or environment in which something can thrive.

   Silence is the oxygen of shame.

   They hoped to starve the terrorists of the oxygen of publicity.

Synonyms

• sourstuff
• E948 when used as a packaging gas

Derived terms

Related terms

Descendants

• ? Burmese: ??????????? (aukhcigyang)

Translations

References

• Oxygen on the British Royal Society of Chemistry's online periodic table

See also

• ozone

Danish

Noun

oxygen n (singular definite oxygenet, not used in plural form)

1. oxygen

   Synonym: ilt

German

Adjective

oxygen

1. (chemistry) oxygenic

   Antonym: anoxygen

Declension

Related terms

• Oxygen

Swedish

Noun

oxygen n

1. (archaic, strictly sciences) oxygen

   Synonym: syre