English
thecium
Thecium comes from New Latin thēcium, from Ancient Greek θήκη ‘sheath’, and ultimately from Proto-Indo-European *dʰeh₁- ‘to do’.
- Proto-Indo-Europeanc. 4500–2500 BCE*dʰeh₁-1‘to do’reconstructed
- Ancient Greekc. 800–300 BCEθήκη2thḗkē‘sheath’
- Ancient Greekc. 800–300 BCEθήκιον2thḗkiondiminutive of θήκη
- New Latinc. 1500–1900thēcium2
- Englishearliest quotation 1952thecium2
attested reconstructed ? uncertain or disputed deepest recorded ancestor
- 1 Wiktionary, Ancient Greek θήκη
- 2 Wiktionary, English thecium
- Earliest quotation in Wiktionary’s entry: 1952, Frederick Lyle Wynd, The Fungi: “The hymenium, or thecium, is generated endogenously within the…”.
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*dʰeh₁-Wiktionary, Ancient Greek θήκη‘to do’reconstructed
- Ancient Greekc. 800–300 BCEθήκηWiktionary, English theciumthḗkē‘sheath’
- Ancient Greekc. 800–300 BCEθήκιονWiktionary, English theciumthḗkiondiminutive of θήκη
- New Latinc. 1500–1900thēciumWiktionary, English thecium
- Englishearliest quotation 1952theciumWiktionary, English thecium. Earliest quotation in Wiktionary’s entry: 1952, Frederick Lyle Wynd, The Fungi: “The hymenium, or thecium, is generated endogenously within the…”
Linked words
through Proto-Indo-European *dʰeh₁- ‘to do’
do, fact, deal, hot, fair, defense, fan, benefit, fashion, feature, mid, defence, custom, treasury, treasure, sufficient, theme, ethnic, defendant, feast, ethical, doom, deed, dis, aesthetic, thesis, synthetic, theology, auditor, demi, deem, spade, forfeit, ethic, feral, fanatic, atheist, familial, medial, medallion, 127 more
through Ancient Greek θήκη ‘sheath’
Today it means
noun The hymenium
Sources
Sources: Wiktionary, “thecium”; the older steps come from the Wiktionary entry for Ancient Greek θήκη. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / Proto-Indo-European *dʰeh₁- / thecium