PBX operator, aboriginal, accented, all-absorbing, alveolar, amidships, apical, apico-alveolar, apico-dental, arch, articulated, assimilated, automatic exchange, average, axial, back, banal, banner, barytone, basal, basic, bedrock, bilabial, broad, cacuminal, capital, cardinal, center, centermost, central
office, centralized, centric, centroidal, centrosymmetric, cerebral, champion, checked, chief, close, common, concentrated, consonant, consonantal, continuant, controlling, core, crowning, crucial, deep, dental, dissimilated, dominant, dorsal, elemental, elementary, embryonic, equatorial, equidistant, essential, first, flat, focal, foremost, front, fundamental, generative, genetic, geocentric, germinal, glide, glossal, glottal, great, guttural, halfway, hard, headmost, heavy, hegemonic, high, important, in embryo, in ovo, indispensable, indoor, inmost, inner, innermost, inside, interior, intermediary, intermediate, internal, intestine, intimate, intonated, intrinsic, inward, key, labial, labiodental, labiovelar, lateral, lax, leading, life-and-death, life-or-death, light, lingual, liquid, long distance, low, machine-switching office, magisterial, main, master, material, mean, medial, median, mediocre, mediterranean, medium, mesial, mezzo, mid, middle, middle-of-the-road, middlemost, middling, midland, midmost, midships, midway, moderate, monophthongal, muted, narrow, nasal, nasalized, normal, nuclear, occlusive, of vital importance, omphalic, open, operator, ordinary, original, outstanding, overriding, overruling, oxytone, palatal, palatalized, panel switching, paramount, pharyngeal, pharyngealized, phonemic, phonetic, phonic, pitch, pitched, pivotal, posttonic, predominant, preeminent, pregnant, preponderant, prevailing, primal, primary, prime, primeval, primitive, primordial, principal, pristine, protogenic, radical, ranking, retroflex, rounded, routine, rudimentary, ruling, salient, seminal, semivowel, signal, significant, soft, sonant, sovereign, standard, star, stellar, stopped, stressed, strong, substantive, supereminent, surd, switchboard operator, syllabic, telephone exchange, telephone office, telephone operator, telephonist, tense, thick, throaty, tonal, tonic, topflight, twangy, umbilical, unaccented, unrounded, unstressed, usual, velar, vital, vocalic, vocoid, voiced, voiceless, vowel, vowellike, weak, wide
middle, midst, mediety, mean, medium, middle term, center &c, mid-course, mezzo termine, juste milieu, halfway house, nave, navel, omphalos, nucleus, nucleolus, equidistance, bisection, half distance, equator, diaphragm, midriff, intermediate, middle, medial, mesial, mean, mid, median, average, middlemost, midmost, mediate, intermediate, equidistant, central
, mediterranean, equatorial, homocentric, in the middle, midway, halfway, midships, amidships, in medias res.
centrality, centricalness, center, middle, focus, core, kernel, nucleus, nucleolus, heart, pole axis, bull's eye, nave, navel, umbilicus, backbone, marrow, pith, vertebra, vertebral column, hotbed, concentration, centralization, symmetry, center of gravity, center of pressure, center of percussion, center of oscillation, center of buoyancy, metacenter, central
, centrical, middle, azygous, axial, focal, umbilical, concentric, middlemost, rachidian, spinal, vertebral, middle, midst, centrally.