Advent/Diabetes #etymology

Many people are enjoying their chocolate-filled Advent calendars right now, but of course those who are diabetic have to make sure they don’t eat too many sugary treats. Advent, the period preceding Christmas, in reference to the “coming” of Christ, first appeared in English as aduent in late Old English, coming from Latin adventus “a coming, approach, arrival”, with specific reference in Church Latin to “the coming of the Savior”, and is the past participle of the Latin verb advenire “to arrive at, come to”, made up from ad “to, toward” (from Proto-Indo-European *ad- “to, near, at”) + venire “to come”, from *gw(e)m-yo-, a suffixed variant form of the PIE root *gwa- “to go, come”. PIE *gw- typically becomes v- in Latin, pronounced [w], but in Greek this consonant went a number of different ways such as /b/, /d/, or /g/, so *gwa- produced the Greek verb bainein “to go, walk, step”, which, when combined with the prefix dia- “through” (probably from PIE *dwo- “two”), produced the verb diabainein “to pass through” and the Late Greek noun diabetes, literally “a passer-through, siphon”. The 2nd c. CE Greek physician Aretaeus the Cappadocian first used the term diabetes to refer to the disease because of its chief symptom “excessive discharge of urine”.