Page, the Fifth

Every word on the entire list rightfully deserves a devoted analysis, but I'm rather keen on first posting the entirety. 

Lemniscate: the infinity symbol, any figure-eight symbol

Moribund: approaching death, about to die, on the verge of becoming obsolete 

Succinct: briefly stated, laconic, terse

Leitmotif: musical passage associated to a specific situation, character, or idea

Hydroplane: to skim a surface, to skim along on the surface of the water, as in a car

Vacivity: vacuity, emptiness, absence, space with a lack of matter

Alabaster: dense translucent, white or tinted fine-grained gypsum 

Ornithopter: aircraft-shaped machine that is held aloft and propelled by wing movements 

Ampersand: the symbol (&) representing the word “and”

Entelechy: actuality, fully realized essence, actuality opposed to potentiality 

Cygnet: a baby swan, young swan

Naïveté: inexperience, quality of being naïve, artlessness

Epizeuxis: a rhetorical figure by which a word is repeated with vehemence or emphasis 

Phalanx: bone of a finger, compact or close-knit body of people, military squadron

Zeugma: syllepsis, type of pun, "You held your breath and the door for me"

Clavilux: machine that generates light via music

Irascible: marked by ire, a hot temper, and resentful anger

Maelstrom: very powerful whirlpool, large, swirling body of water, turbulent situation

Betwixt: between, in an intermediate position

Cadenza: musical or literary improvisation

Elegiac: resembling or characteristic of or appropriate to an elegy, triste, sad, mournful

Albedo: the ratio of reflected to incident light

Exiguous: excessively scanty, inadequate, meager

Sisyphean: pertaining to or involving endless labor, pertaining to Sisyphus

Quasihemidemisemiquaver: a 128th note 

Peloton: main body of riders in a bicycle race 

Oultrepreu: very brave, having extreme or a dangerous level of valor

Logomachy: dispute about words, battle of words, war of words

Sepulcher: a burial vault, receptacle for sacred relics, especially in an altar 

Zeppelin: large dirigible balloon, rigid airship supported by gas power

Chaos: lack of order, condition or place of disorder or confusion, riotous mass, a jumble 

Neutralize: to make neutral, counterbalance or counteract the effect of; render ineffective

Protean: readily taking on varied forms or meanings, showing sizeable variety or diversity 

Arbalest: medieval missile launcher designed on the crossbow, large crossbow

Crwth: ancient Celtic musical instrument

Miniscule: very small, diminutive, when compared to a normal counterpart

Sfumato: definition or form without hasty outline by mild gradation from light to shadow

Circadian: relating to or exhibiting approximately 24-hour periodicity 

Parapraxis: minor error, Freudian slip, slip of the tongue

Alembic: something that refines, purifies, or transmutes as if by distillation

Zenith: point on the celestial sphere that is above the observer, highest point, maximum

Lixiviation: act of separating soluble from insoluble substances via water or solvent

Bolster: to support and strengthen, structural part used to support and strengthen 

Phoenix: mythical bird of fire which rises from it’s ashes in a cycle of rebirth

Tregetour: juggler, mummer, conjurer