erratic vs planetary what difference

what is difference between erratic and planetary

English

Alternative forms

  • erratick, erraticke, erratique (all obsolete)

Etymology

From Latin erraticus; compare Old French erratique.

Pronunciation

  • IPA(key): /ɪˈɹætɪk/
  • Rhymes: -ætɪk

Adjective

erratic (comparative more erratic, superlative most erratic)

  1. unsteady, random; prone to unexpected changes; not consistent
    Henry has been getting erratic scores on his tests: 40% last week, but 98% this week.
  2. Deviating from normal opinions or actions; eccentric; odd.
    erratic conduct

Antonyms

  • consistent

Derived terms

  • erratical
  • erratically
  • erraticness

Translations

Noun

erratic (plural erratics)

  1. (geology) A rock moved from one location to another, usually by a glacier.
    • 2003, Bill Bryson, A Short History of Nearly Everything, BCA 2003, p. 372:
      The term for a displaced boulder is an erratic, but in the nineteenth century the expression seemed to apply more often to the theories than to the rocks.
  2. Anything that has erratic characteristics.

Synonyms

  • (glaciers): dropstone

Translations

Anagrams

  • Cartier, cartier, cirrate, rice rat


English

Etymology

planet +‎ -ary

Pronunciation

  • IPA(key): /ˈplæ.nə.ˌtɛr.i/

Adjective

planetary (not comparable)

  1. (astronomy) Of, or relating to planets, or the orbital motion of planets.
    • erratical and planetary life
  2. Of, or relating to the Earth; terrestrial.
  3. Of, or relating to the whole Earth; global.
    Synonym: global
  4. (of a gear train) epicyclic
    Synonym: epicyclic

Derived terms

Translations

Noun

planetary (plural planetaries)

  1. A planetary nebula.

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