different between combustion vs ashless

English

Etymology

From Old French combustion, from Latin combustio, from comburere (“to burn”), itself from the intensifying prefix com- + the root burere (a faulty sep. of amburere "to burn around", itself from ambi- + urere "to burn, singe"); equivalent to combust +? -ion.

Pronunciation

• IPA^(key): /k?m?b?s.t??n/

Noun

combustion (countable and uncountable, plural combustions)

1. (chemistry) The act or process of burning.
2. A process where two chemicals are combined to produce heat.
3. A process wherein a fuel is combined with oxygen, usually at high temperature, releasing heat.
4. (figuratively) Violent agitation, tumult.
   • c. 1665, John Worthington, "The Author's Life", in The Works of the Pious and Profoundly-learned Joseph Mede

     There [were] great combustions and divisions among the heads of the university.

Synonyms

• (act or process of burning): incineration, cremation

Hyponyms

• deflagration
• detonation

Related terms

• combustible
• combustive
• combustor
• spontaneous combustion

Translations

French

Etymology

From Old French combustion, from Latin combustio, from comburere (“to burn”), itself from the intensifying prefix com- + the root burere (a faulty sep. of amburere "to burn around", itself from ambi- + urere "to burn, singe").

Pronunciation

• IPA^(key): /k??.bys.tj??/
• Homophone: combustions
• Hyphenation: com?bus?tion

Noun

combustion f (plural combustions)

1. combustion, burning, incineration

Derived terms

• chambre de combustion
• combustible
• turbine à gaz de combustion

Related terms

• comburant

Further reading

• “combustion” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

English

Etymology

ash +? -less

Adjective

ashless (not comparable)

1. Without ash.

   an ashless hearth

2. That leaves no ash upon combustion.

   an ashless fuel

Anagrams

• Hassels, hassles, slashes