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• pioneer
  pioneer

  noun

  a person who is among those who first enter or settle a region, thus opening it for occupation and development by others.
• Pioneer
  Pioneer

  noun

  a total abstainer from alcoholic drink, esp a member of the Pioneer Total Abstinence Association, a society devoted to abstention

pioneer

American  

[pahy-uh-neer] / ˌpaɪ əˈnɪər /

noun

1. a person who is among those who first enter or settle a region, thus opening it for occupation and development by others.

2. a person, group, or thing that is first or among the earliest in any field of inquiry, enterprise, or development.

   a woman who was a pioneer in cancer research;

   vehicles that were pioneers of automotive engineering.

   Synonyms:

   innovator, groundbreaker, trailblazer, leader

3. one of a group of foot soldiers detailed to make roads, dig intrenchments, etc., in advance of the main body.

4. Ecology. an organism that successfully establishes itself in a barren area, thus starting an ecological cycle of life.

5. Aerospace. Pioneer, one of a series of U.S. space probes that explored the solar system and transmitted scientific information to earth.

6. Pioneer, (formerly) a member of a Communist organization in the Soviet Union for children ranging in age from 10 to 16.

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verb (used without object)

1. to act as a pioneer.

verb (used with object)

1. to be the first to open or prepare (a way, settlement, etc.).

2. to take part in the beginnings of; initiate.

   to pioneer an aid program.

3. to lead the way for (a group); trailblaze.

adjective

1. being the earliest, original, first of a particular kind, etc..

   a pioneer method of adult education.

2. of, relating to, or characteristic of pioneers.

   pioneer justice.

3. being a pioneer.

   a pioneer fur trader.

pioneer ¹ British  

/ ˌpaɪəˈnɪə /

noun

1. 1. a colonist, explorer, or settler of a new land, region, etc

   2. ( as modifier )

      a pioneer wagon

2. an innovator or developer of something new

3. military a member of an infantry group that digs entrenchments, makes roads, etc

4. ecology the first species of plant or animal to colonize an area of bare ground

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verb

1. to be a pioneer (in or of)

2. (tr) to initiate, prepare, or open up

   to pioneer a medical programme

Pioneer ² British  

/ ˌpaɪəˈnɪə /

noun

1. a total abstainer from alcoholic drink, esp a member of the Pioneer Total Abstinence Association, a society devoted to abstention

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Pioneer ³ British  

/ ˌpaɪəˈnɪə /

noun

1. any of a series of US spacecraft that studied the solar system, esp Pioneer 10, which made the first flyby of Jupiter (1973), and Pioneer 11, which made the first flyby of Saturn (1979)

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Etymology

Origin of pioneer

First recorded in 1515–25; from Middle French pionier, Old French peonier “foot soldier”; see origin at peon ¹, -eer

Explanation

A pioneer is one of the first settlers in a new place. If you desperately want to experience life in space, maybe you will be one of the pioneers who live in the first moon settlement. Pioneer comes from the old French for foot soldier or laborer, and particularly for groups of soldiers that would go out ahead of the rest of the troops to prepare the way. The European settlers who came to America in the 16th century are known as pioneers, as are the later groups who traveled West in the 18th and 19th centuries. We also use pioneer for anyone who takes initiative in a field, such as science or education.

Example Sentences

Corteva sells seeds under brands like Pioneer and crop-protection chemicals such as herbicides and insecticides.

From Barron's • May 1, 2026

It also acquired parachute maker Pioneer Aerospace in 2023 and specialty RF filter firm Akoustis in 2025 after each of those companies filed for bankruptcy.

From MarketWatch • Apr. 2, 2026

"What happened was barbaric, deplorable and shameful. We want the strictest punishment for those responsible," said Badshah Mian, managing director of Pioneer Knitwear.

From BBC • Feb. 15, 2026

She and her colleagues broke news ranging from Exxon’s $60 billion deal for Pioneer Natural Resources to Subway’s purchase by Roark Capital for about $9 billion.

From The Wall Street Journal • Jan. 28, 2026

The governor of the state of California bought every single eleventh-grade Pioneer ice cream sandwiches.

From "100 Sideways Miles" by Andrew Smith