Paleolithic

• palaeolithic, palæolithic, palaeolithical, paleolithical

From paleo- + -lithic.

• (UK) IPA^(key): /ˈpeɪl.iː.əʊˌlɪθ.ɪk/
• (General American) IPA^(key): /ˈpeɪlioʊˌlɪθɪk/, /ˈpeɪliəˌlɪθɪk/

• Audio (US):

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Paleolithic

1. A period that lasted from two and a half million years ago to 10,000 BCE; the Old Stone Age.

   Synonym: Old Stone Age

   Holonym: Stone Age

   Comeronyms: New Stone Age, Neolithic

• lith

Paleolithic (not comparable)

1. Of or referring to the Old Stone Age (the Paleolithic period or Paleolithic age).
   • 1936, Rollo Ahmed, The Black Art, London: Long, page 18:

     We find material evidences of magical practices in the European caves of the Palæolithic age[.]

2. (hyperbolic) Antiquated, antediluvian.
   • 2025 August 4, Mike Isaac, “A.I. Has Ushered in Silicon Valley’s ‘Hard Tech’ Era”, in The New York Times‎^[1], archived from the original on 4 August 2025:

     Stacked up against ChatGPT’s ability to instantly transform any image into a Studio Ghibli cartoon, Instagram’s photo filters are practically Paleolithic.

• Mesolithic
• Neolithic