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annexation (n.)[annexation 词源字典]: 1620s, from Medieval Latin annexiationem (nominative annexatio) "action of annexing," noun of action from past participle stem of annexare (see annex). The Middle English noun form was annexion "union; joining; territory acquired" (mid-15c.).[annexation etymology, annexation origin, 英语词源]
Annie: diminutive of fem. proper name Ann or Anne (see Anna). Annie Oakley (1860-1926) was the famous rifle markswoman.
annihilate (v.): 1520s, from an obsolete adjective meaning "reduced to nothing" (late 14c.), originally the past participle of a verb, anihil, from Old French annichiler (14c.), from Late Latin annihilare "to reduce to nothing," from Latin ad- "to" (see ad-) + nihil "nothing" (see nil). Related: Annihilated; annihilating.
annihilation (n.): 1630s, from Middle French annihilation (restored from Old French anichilacion, 14c.), or directly from Late Latin annihilationem (nominative annihilatio), noun of action from past participle stem of annihilare (see annihilate).
anniversary (n.): early 13c., originally especially of the day of a person's death, from Medieval Latin anniversarium, from Latin anniversarius (adj.) "returning annually," from annus (genitive anni) "year" (see annual (adj.)) + versus, past participle of vertere "to turn" (see versus). The adjective came to be used as a noun in Church Latin as anniversaria (dies) in reference to saints' days. An Old English word for "anniversary" (n.) was mynddæg, literally "mind-day."
Anno Domini: 1570s, Latin, literally "in the year of (our) Lord."
annotate (v.): 1733, from Latin annotatus, past participle of annotare "to note down" (see annotation). Related: Annotated; annotating. Not in Johnson's "Dictionary," but used therein in defining comment. Form annote is recorded from mid-15c. Related: Annotated; annotating.
annotation (n.): mid-15c., from Latin annotationem (nominative annotatio), noun of action from past participle stem of annotare "to add notes to," from ad- "to" (see ad-) + notare "to note, mark" (see note (v.)).
announce (v.): c. 1500, "proclaim, make known," from Old French anoncier "announce, proclaim" (12c., Modern French annoncer), from Latin annuntiare, adnuntiare "to announce, relate," literally "to bring news," from ad- "to" (see ad-) + nuntiare "relate, report," from nuntius "messenger" (see nuncio). Related: Announced; announcing.
announcement (n.): 1798, from French announcement, from Old French anoncier (see announce). Or else formed in English from announce + -ment. Earlier in same sense was announcing.
announcer (n.): 1610s, agent noun from announce. Radio sense is recorded from 1922.
annoy (v.): late 13c., from Anglo-French anuier, Old French enoiier, anuier "to weary, vex, anger; be troublesome or irksome to," from Late Latin inodiare "make loathsome," from Latin (esse) in odio "(it is to me) hateful," ablative of odium "hatred" (see odium). Earliest form of the word in English was as a noun, c. 1200, "feeling of irritation, displeasure, distaste." Related: Annoyed; annoying; annoyingly. Middle English also had annoyful and annoyous (both late 14c.).
annoyance (n.): late 14c., "act of annoying," from Old French enoiance "ill-humor, irritation," from anuiant, present participle of anuier "to be troublesome, annoy, harass" (see annoy). Meaning "state of being annoyed" is from c. 1500. Earlier, annoying was used in the sense of "act of offending" (c. 1300), and a noun annoy (c. 1200) in a sense "feeling of irritation, displeasure, distaste."
annoyed (adj.): "vexed, peeved, offended," late 13c., past participle adjective from annoy (v.).
annual (adj.): late 14c., from Old French annuel (12c.) or directly from Late Latin annualem (nominative annualis), corresponding to Latin annalis as adjective form of annus "year," from PIE *at-no-, from root *at- "to go," on notion of "period gone through" (cognates: Sanskrit atati "goes, wanders," Gothic aþnam (dative plural) "year," Oscan akno- "year, holiday, time of offering"). Used of plants since 1710.
annual (n.): c. 1400, originally "service commemorating the anniversary of a person's death," from annual (adj.). By 1824 as short for annual plant.
annualize (v.): in economics and finance, 1904; see annual + -ize. Related: Annualized; annualizing.
annually (adv.): 1590s, from annual (adj.) + -ly (2).
Annuit Coeptis: on the Great Seal of the United States of America, condensed by Charles Thompson, designer of the seal in its final form, from Latin Juppiter omnipotes, audacibus annue coeptis "All-powerful Jupiter favor (my) daring undertakings," line 625 of book IX of Virgil's "Aeneid." The words also appear in Virgil's "Georgics," book I, line 40: Da facilem cursam, atque audacibus annue coeptis "Give (me) an easy course, and favor (my) daring undertakings." Thompson changed the imperative annue to annuit, the third person singular form of the same verb in either the present tense or the perfect tense. The motto also lacks a subject.

The motto is often translated as "He (God) is favorable to our undertakings," but this is not the only possible translation. Thomson wrote: "The pyramid signifies Strength and Duration: The Eye over it & Motto allude to the many signal interpositions of providence in favour of the American cause." The original design (by William Barton) showed the pyramid and the motto Deo Favente Perennis "God favoring through the years."
annuity (n.): early 15c., "a yearly allowance, grant payable in annual installments," from Anglo-French and Old French annuité (14c.) or directly from Medieval Latin annuitatem (nominative annuitas), from Latin annus "year" (see annual (adj.)). Meaning "an investment that entitles one to equal annual payments" is from 1690s.