English
logosphere
From logo- + -sphere.
Proto-Indo-European *sperH- ‘to kick, rebound, move convulsively’
…
Latin sphaera ‘ball, globe, celestial sphere’
Late Latin sphēra
Old French sphere ‘sphere (shape)’
Middle English spere ‘the cosmos, outer space’
English sphere
Today it means
noun The age of writing, preceding the graphosphere or age of print.
Language periods are conventional ranges, not dates for this word.
Etymograph / logosphere