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Foreign. It's Merriam Webster's Word of the Day for February 4th. Today's word is diaphanous, spelled D I A P H A N O U S. Diaphanous is an adjective. It's a formal word used to describe fabric of a texture so fine that one can see through it. Diaphanous is also sometimes used figuratively to describe something characterized by extreme delicacy of form. Here's the word used in a sentence from Harper's with a bright pattern set on flaming crimson and a diaphanous petticoat underneath the dress fits her perfectly. What do the words diaphanous epiphany, fancy, phenomenon, sycophant, emphasis and phase all have in common? The Greek word phainae shows more clearly in some of these words than in others, but it underlies all of them. The groundwork for diaphanous was laid when faina, meaning to bring to light, cause to appear, was combined with the prefix dia, meaning through. From that pairing came the Greek diaphanes, meaning transparent, parent of the medieval Latin word diaphanous, which is the direct ancestor of the English word with your word of the day. I'm Peter Sokolowski.
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Date: February 4, 2026
Host: Merriam-Webster (Peter Sokolowski)
Today's episode introduces and explores the word diaphanous, delving into its meanings, usage, and fascinating etymological history. The wordspotlight is on linguistic connections and the evolution of vocabulary rooted in Greek and Latin.
Introduction:
The host spells out the word and establishes it as the word of the day.
“Today's word is diaphanous, spelled D I A P H A N O U S. Diaphanous is an adjective.” (00:07)
Meaning:
“It's a formal word used to describe fabric of a texture so fine that one can see through it.” (00:13)
“Diaphanous is also sometimes used figuratively to describe something characterized by extreme delicacy of form.” (00:21)
Etymological Exploration:
The host connects "diaphanous" to a family of related words:
“What do the words diaphanous, epiphany, fancy, phenomenon, sycophant, emphasis and phase all have in common?” (00:39)
On the meaning:
“It's a formal word used to describe fabric of a texture so fine that one can see through it.” (00:13)
On etymology:
“The groundwork for diaphanous was laid when phainē, meaning to bring to light, cause to appear, was combined with the prefix dia, meaning through.” (00:50)
On related words:
“What do the words diaphanous, epiphany, fancy, phenomenon, sycophant, emphasis and phase all have in common?... The Greek word phainē shows more clearly in some of these words than in others, but it underlies all of them.” (00:39)
Closing signature:
“With your word of the day, I'm Peter Sokolowski.” (01:21)
This episode of Merriam-Webster's Word of the Day efficiently introduces "diaphanous," illustrating its meanings with graceful language and tracing its lineage from Greek and Latin. The blend of example, etymology, and related words offers a rich, concise word study for listeners and lovers of language.