Heliogram

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A message transmitted by a heliograph.
  2. 2
    a message transmitted by means of the sun's rays wordnet

Etymology

From helio- + -gram.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.