compound
noun /ˈkɒmpaʊnd/
  /ˈkɑːmpaʊnd/
- a thing consisting of two or more separate things combined together
- compounds derived from rainforest plants
 - The air smelled like a compound of diesel and petrol fumes.
 
 - (chemistry) a substance formed by a chemical reaction of two or more elements in fixed amounts relative to each other
- Common salt is a compound of sodium and chlorine.
 
Wordfinder- acid
 - catalyst
 - chemistry
 - compound
 - formula
 - molecule
 - pH
 - react
 - solution
 - valency
 
Extra ExamplesTopics Physics and chemistryb2- Dalton believed that the simplest compound of two elements must have one atom of each.
 - Scientists have produced a new chemical compound.
 - a compound of oxygen and hydrogen
 - Proteins and fats are organic compounds.
 
Oxford Collocations Dictionaryadjective- chemical
 - inorganic
 - organic
 - …
 
- form
 - make
 - produce
 - …
 
- contain something
 - be derived from something
 - be found in something
 - …
 
- compound of
 
 - (grammar) a noun, an adjective or a verb made of two or more words or parts of words, written as one or more words, or joined by a hyphen. Travel agent, dark-haired and bathroom are all compounds.
- Most compound nouns form their plurals in the usual way.
 
 - an area surrounded by a fence or wall in which a factory or other group of buildings stands
- life inside the prison compound
 
Extra Examples- Police are investigating a raid on a secure compound.
 - Angry crowds stormed the presidential palace compound.
 
Oxford Collocations Dictionaryadjective- military
 - palace
 - prison
 - …
 
- in a/the compound
 - inside a/the compound
 
 
Word Originnoun senses 1 to 3 late Middle English compoune (verb), from Old French compoun-, present tense stem of compondre, from Latin componere ‘put together’. The final -d was added in the 16th cent. on the pattern of expound and propound. noun sense 4 late 17th cent. (referring to such an area in SE Asia): from Portuguese campon or Dutch kampoeng, from Malay kampong ‘enclosure, hamlet’.