Word.ws English Dictionary

Pioneer anomaly

Pioneer anomaly noun: the observed deviation from predicted accelerations of the Pioneer 10 and Pioneer 11 spacecraft after they passed about 20 astronomical units on their trajectories out of the Solar System.

Noun

Pioneer anomaly (countable and uncountable, plural Pioneer anomalies)

  1. The observed deviation from predicted accelerations of the Pioneer 10 and Pioneer 11 spacecraft after they passed about 20 astronomical units on their trajectories out of the Solar System.

Forms of Pioneer anomaly

pluralPioneer anomalies

Origin of Pioneer anomaly

Named after NASA space probes Pioneer 10 and Pioneer 11.

Questions about Pioneer anomaly

What does Pioneer anomaly mean?
Pioneer anomaly means the observed deviation from predicted accelerations of the Pioneer 10 and Pioneer 11 spacecraft after they passed about 20 astronomical units on their trajectories out of the Solar System.
What part of speech is Pioneer anomaly?
Pioneer anomaly is a noun.
What is the plural of Pioneer anomaly?
The plural of Pioneer anomaly is Pioneer anomalies.

Words near Pioneer anomaly in the dictionary

  1. pion
  2. pion rocket
  3. pion rockets
  4. pioned
  5. pioneer
  6. Pioneer anomaly
  7. pioneer axon
  8. pioneer axons
  9. Pioneer Bay
  10. Pioneer Day
  11. Pioneer Days

Source and license

Adapted from Wiktionary: Pioneer anomaly (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “Pioneer anomaly.” Word.ws, https://word.ws/pioneer_anomaly. Based on Wiktionary, CC BY-SA 4.0.