英语词源字典 - 在线词源网站

hereditary [hereditary 词源字典]: hereditary: [16] Latin hērēs ‘heir’ (a relative of Greek khéra ‘widow’ and Sanskrit hā- ‘leave, lose’) has been quite a prolific source of English words. For one thing there is heir [13] itself, acquired via Old French heir. And then there are all the derivatives of the Latin stem form hērēd-, including hereditament [15], hereditary, heredity [16], and, via the late Latin verb hērēditāre, heritage [13] and inherit [14].
=> heredity, heritage, inherit[hereditary etymology, hereditary origin, 英语词源]
accreditation (n.): 1806, noun of action from accredit.
creditable (adj.): 1520s, from credit (v.) + -able. Related: Creditably; creditability.
hereditable (adj.): mid-15c.; see heredity + -able. Related: Hereditability.
hereditament: "inherited property," mid-15c., from Medieval Latin hereditamentum, from Latin hereditatem (see heredity).
hereditary (adj.): early 15c., hereditarie, from Latin hereditarius, from hereditas (see heredity).
meditate (v.): 1580s, "to ponder," back-formation from meditation, or else from Latin meditatus, past participle of meditari (see meditation). Related: Meditated; meditating.
meditation (n.): c. 1200, "contemplation; devout preoccupation; devotions, prayer," from Old French meditacion "thought, reflection, study," and directly from Latin meditationem (nominative meditatio) "a thinking over, meditation," noun of action from past participle stem of meditari "to meditate, think over, reflect, consider," frequentative form from PIE root *med- "to measure, limit, consider, advise, take appropriate measures" (cognates: Greek medesthai "think about," medon "ruler;" Latin modus "measure, manner," modestus "moderate," modernus "modern," mederi "to heal," medicus "physician;" Sanskrit midiur "I judge, estimate;" Welsh meddwl "mind, thinking;" Gothic miton, Old English metan "to measure;" also see medical).

Meaning "discourse on a subject" is early 14c.; meaning "act of meditating, continuous calm thought upon some subject" is from late 14c. The Latin verb also had stronger senses: "plan, devise, practice, rehearse, study."
meditative (adj.): 1650s, from Late Latin meditativus, from meditat-, past participle stem of Latin meditari (see meditation). Related: Meditatively; meditativeness.
premeditate (v.): 1540s, from pre- + meditate, or a back formation from premeditation, or else from Latin praemeditatus, past participle of praemeditari "to think over." Related: Premeditated; premeditating.
premeditation (n.): early 15c., from Old French premeditacion and directly from Latin praemeditationem (nominative praemeditatio) "consideration beforehand," noun of action from past participle stem of praemeditari "to consider beforehand," from prae- "before" (see pre-) + meditari "to consider" (see meditation).
unpremeditated (adj.): 1590s, from un- (1) "not" + past participle of premeditate (v.).