penumbral Definition

umbral, nebulosity, zodiacal light, obscuration, celestial sphere, occultation, earthshine, photosphere, celestial equator, chromosphere, haloes, jaggedness, emanations, nebulas, sundog, cirrus cloud, florescence, baryon, eclipsing binary, sidereal, photometry, galactic equator, scotoma, interstices, epsilon aurigae, periodicities, jovian, moonlet, indeterminacy, singularities, wavelike, opacities, aether, blackbody, prominences, noosphere, auroral, afterimage, disembodiment, refract, coronagraph, parsec, spectral, immateriality, ecliptic, omega centauri, spatiality, hysteresis loop, gravitational interaction, whorls, punctate, quasiparticle, superimposition, partial eclipse, unnamable, cumulus cloud, airglow, waveband, prograde, hoarfrost, dipolar, interpenetration, plagioclase, punctum, dimness, uranian, luminosities, mysterium, corpuscular, condensations, vorticity, immanence, asterism, fermion, heisenberg uncertainty principle, tracery, plasmon, infinitude, auricle, photoluminescence, lucent, macules, obliquity, planetary nebula, antineutrinos, hyperreality, ostia, featherlike, lineaments, caudal fin, caesura, infinities, oort cloud, mantling, polarizations, mimesis, syrtis major, choroid, anisotropy, gloriousness,