Galagog is a neologism (an invented word) coined by John Koenig for his project, The Dictionary of Obscure Sorrows.
Definition
• Part of speech: Noun (n.)
• Pronunciation: "gal-uh-gawg"
• Meaning: The state of being simultaneously entranced and unsettled by the vastness of the cosmos, which makes your deepest concerns feel laughably quaint, yet vanishingly rare.
• Etymology: Derived from galaxy (a gravitationally bound system of millions of stars) + agog (awestruck).
