1

oil

noun, often attributive \ ˈȯi(-ə)l \
Updated on: 10 Dec 2017

Definition of oil

1 a : any of numerous unctuous combustible substances that are liquid or can be liquefied easily on warming, are soluble in ether but not in water, and leave a greasy stain on paper or cloth
b (1) : petroleum
(2) : the petroleum industry
2 : a substance (such as a cosmetic preparation) of oily consistency
  • bath oil
3 a : an oil color used by an artist
b : a painting done in oil colors
4 : unctuous or flattering speech

Examples of oil in a Sentence

  1. The price of crude oil is expected to rise.

  2. We heat our house with oil.

  3. A little bit of oil will help lubricate the chain.

  4. Add a little oil to the pan and stir-fry the onions.

  5. The dressing is made with oil, vinegar, and a pinch of herbs.

Recent Examples of oil from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'oil.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of oil

Middle English oile, from Anglo-French, from Latin oleum olive oil, from Greek elaion, from elaia olive

Other Mining and Drilling Terms


2

oil

verb

Definition of oil

transitive verb
: to smear, rub over, furnish, or lubricate with oil
intransitive verb
: to take on fuel oil
oil the hand or oil the palm
: bribe, tip

Examples of oil in a Sentence

  1. He oiled the bearings of the machine.

  2. if you oil the machinery on a regular basis, it will operate more efficiently

Recent Examples of oil from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'oil.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of oil

15th century

oil Synonyms

Synonyms
grease, lubricate, slick, wax
Related Words
bathe, douse (also dowse), drench, soak, souse, wash, water, wet
Near Antonyms
coarsen, rough, roughen; dehydrate, dry, parch, sear


OIL Defined for English Language Learners

oil

noun

Definition of oil for English Language Learners

  • : a thick, black liquid that comes from the ground and that is used in making various products (such as gasoline)

  • : a type of oil that is used as a fuel to produce heat or light

  • : a type of oil that makes the different parts in an engine, machine, etc., run smoothly


oil

verb

Definition of oil for English Language Learners

  • : to put oil in or on (something)


OIL Defined for Kids

1

oil

noun \ ˈȯil \

Definition of oil for Students

1 : any of numerous greasy usually liquid substances from plant, animal, or mineral sources that do not dissolve in water and are used especially as lubricants, fuels, and food
2 : petroleum
3 : paint made of pigments and oil
4 : a painting done in oils

2

oil

verb

Definition of oil for Students

oiled; oiling
: to rub on or lubricate with a greasy substance

Medical Dictionary

oil

noun \ ˈȯi(ə)l \

medical Definition of oil

1 : any of numerous unctuous combustible substances that are liquid or can be liquefied easily on warming, are soluble in ether but not in water, and leave a greasy stain on paper or cloth — see essential oil, fatty oil, volatile oil
2 : a substance (as a cosmetic preparation) of oily consistency
  • bath oil

oil

adjective


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