English Reference

Word

portion

Phoneticspor·tion

US/ˈpɔɹʃən/

UK/pˈɔːʃən/

Definitions

01a part of a whole

B2

n. a part of something larger, like a project or a sum of money.

n. a constituent part or section of a larger whole. Often used in formal or academic contexts to describe segments of a total amount.

“A large portion of the company's budget is spent on advertising.”

“The research team dedicated a significant portion of their findings to the environmental impact of urban expansion.”

Academic

Antonyms

02food serving

B1 · Cooking

n. the amount of food served to one person at a meal.

n. an individual serving of food intended for one person.

“The restaurant serves very generous portions of pasta.”

“Nutritionists recommend controlling portion sizes to maintain a balanced diet, especially when consuming calorie-dense processed foods.”

Synonyms

03fate or destiny

C2

n. your luck or what happens to you in life.

n. one's destiny, lot, or predetermined fate in life.

“Hard work and long hours were his portion in those early years.”

“In the classic novel, the protagonist accepts that a life of solitude is to be his inevitable portion.”

Literary

Synonyms

04to divide and share

B2

v. to divide something into parts so you can give it to different people.

v. to divide a whole into shares for distribution or allocation. Often used with 'out'.

“The mother carefully portioned out the cake so each child got an equal piece.”

“The relief agency began to portion out the emergency supplies to the families displaced by the flood.”

Usage

Often functions as a phrasal verb 'portion out' when describing the physical act of distribution.

Antonyms

Real-World Examples

“Parts of the United States and Canada will have the chance to see the moon block at least a small portion of the sun.”
The New York Times · 12 Aug 2026
“However, depending on the orbit the solar panels are put in, the Earth may shadow them for some portion of the orbit.”
ScienceDaily · 19 Jun 2026
“A newly published study from University of Iowa Health Care suggests that a surprisingly small portion of human DNA plays a major role in language ability.”
ScienceDaily · 12 Jun 2026

Etymology

From Middle English porcioun, borrowed from Old French porcion, from Latin portio (“a share, part, portion, relation, proportion”), akin to pars (“part”); see part. Compare proportion.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Collocations

significant portionsubstantial portion

Related words

This entry

Level
B2 · Upper Intermediate
Frequency
Common
Updated

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English Reference