radiatio Latin · revision 9154

+ {{infobox|confidence=established|formation=derivation|attested=Pliny the Elder|origins=la radius}}

+

+ ==Pronunciation==

+ * IPA (Classical): [ra.diˈaː.ti.oː]^(Wiktionary)

+ * IPA (Ecclesiastical): [ra.diˈat.t͡si.o]^(Wiktionary)

+

+ ==Forms==

+ '''radiātiō''' ''f'' (genitive radiātiōnis); third declension^(Wiktionary)

+

+ ==Etymology==

+ It is from [[radiō]] “to shine” with the suffix [[-tiō]], from [[radius]] “ray”.^(OLD 2012)^(Wiktionary)^(Etymonline)

+

+ ==Earliest recorded meaning==

+ Köbler's first source is Pliny the Elder, whom he dates 23/24–79 AD, and Pliny uses it of the gleam of marble.^(Köbler 2010)^(Lewis & Short 1879)^(Gaffiot 2016)

+

+ ==Semantic evolution==

+ It meant a gleam, dazzle, a shining, as of marble in Pliny the Elder and of stars in Arnobius.^(OLD 2012)^(Lewis & Short 1879)^(Gaffiot 2016) Lewis & Short note it is post-Augustan.^(Lewis & Short 1879)

+

+ British Medieval Latin used it for the emitting of rays of light, and of the aspects of the stars.^(DMLBS) It gave [[en|radiation]] in the mid-15th century, “act of emitting light”.^(Etymonline)

+

+ ==Timeline==

+ * 23/24–79 AD – Pliny the Elder uses it.^(Köbler 2010)^(Lewis & Short 1879)

+ * mid-15th century – English ''radiation'' is recorded.^(Etymonline)

+

+ ==Meanings==

+ ===Noun===

+ # A gleam, shining, [[m|en|radiation]].^(OLD 2012)

+

+ ==Related words==

+ * [[radiō]]

+ * [[radius]]

+ * [[en|radiation]]

+

+ ==References==

+ {{reflist}}