Meanings
nounmelanoheliophobia (uncountable)
- informaluncountableThe irrational fear of (astrophysical) black holes.
I hear you suffer from a certain affliction, melanoheliophobia
2021 October 5, “Dark Star”, in Killers of the Cosmos, season 1, episode 5, via Science Channel
Origin
From melano- (“pigmented, darkened”) + helio- (“Sun, star”) + -phobia (“fear”), from black holes being collapsed stars.
Full word history & related roots →Cite this entry
APA
melanoheliophobia. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/melanoheliophobia
MLA
“melanoheliophobia.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/melanoheliophobia. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “melanoheliophobia,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/melanoheliophobia.
Source: melanoheliophobia on Wiktionary, CC BY-SA 4.0.