Definition of x Definition of x_chromosome Definition of x_ray Definition of x-axis Definition of x-linked Definition of x-linked_dominant_inheritance Definition of x-linked_gene Definition of x-linked_recessive_inheritance Definition of x-linked_scid Definition of x-or_circuit Definition of x-radiation Definition of x-ray Definition of x-ray_diffraction Definition of x-ray_film Definition of x-ray_machine Definition of x-ray_photograph Definition of x-ray_photography Definition of x-ray_picture Definition of x-ray_therapy Definition of x-ray_tube Definition of x-raying Definition of x-scid Definition of xanax Definition of xang Definition of xanthate Definition of xanthelasma Definition of xanthemia Definition of xanthic_acid Definition of xanthine Definition of xanthium Definition of xanthoma Definition of xanthoma_disseminatum Definition of xanthoma_multiplex Definition of xanthomatosis Definition of xanthomonad Definition of xanthomonas Definition of xanthophyceae Definition of xanthophyl Definition of xanthophyll Definition of xanthopsia Definition of xanthorrhoeaceae Definition of xanthorroea Definition of xanthosis Definition of xanthosoma Definition of xanthosoma_atrovirens Definition of xanthosoma_sagittifolium Definition of xanthous Definition of xantusiidae Definition of xavier Definition of xc Definition of xci Definition of xcii Definition of xciii Definition of xciv Definition of xcl Definition of xcv Definition of xcvi Definition of xcvii Definition of xcviii Definition of xdsl Definition of xe Definition of xenarthra Definition of xenia Definition of xenicidae Definition of xenicus Definition of xenicus_gilviventris Definition of xenogenesis Definition of xenograft Definition of xenolith Definition of xenon Definition of xenophanes Definition of xenophobia Definition of xenophobic Definition of xenophon Definition of xenopodidae Definition of xenopus Definition of xenopus_laevis Definition of xenorhyncus Definition of xenorhyncus_asiaticus Definition of xenosauridae Definition of xenosaurus Definition of xenotime Definition of xenotransplant Definition of xenotransplantation Definition of xeranthemum Definition of xeranthemum_annuum Definition of xeric Definition of xerobates Definition of xeroderma Definition of xeroderma_pigmentosum Definition of xerodermia Definition of xerographic Definition of xerographic_copier Definition of xerographic_printer Definition of xerography Definition of xeroma Definition of xerophile Definition of xerophilous_plant Definition of xerophthalmia Definition of xerophthalmus Definition of xerophyllum Definition of xerophyllum_tenax Definition of xerophyte Definition of xerophytic Definition of xerophytic_plant Definition of xeroradiography Definition of xerostomia Definition of xerotes Definition of xerox Definition of xerox_copy Definition of xerox_machine Definition of xerxes_i Definition of xerxes_the_great Definition of xestobium_rufovillosum Definition of xhosa Definition of xi Definition of xian Definition of xiao Definition of xie Definition of xii Definition of xiii Definition of ximenesia_encelioides Definition of xinjiang Definition of xinjiang_uighur_autonomous_region Definition of xiomara Definition of xiong Definition of xiphias Definition of xiphias_gladius Definition of xiphiidae Definition of xiphium_iris Definition of xiphoid_process Definition of xiphosura Definition of xiphosurus_polyphemus Definition of xishuangbanna_dai Definition of xiv Definition of xix Definition of xizang Definition of xl Definition of xli Definition of xlii Definition of xliii Definition of xliv Definition of xlv Definition of xlvi Definition of xlvii Definition of xlviii Definition of xmas Definition of xml Definition of xochitl Definition of xor_circuit Definition of xor_gate Definition of xt Definition of xtc Definition of xu Definition of xuan Definition of xv Definition of xvi Definition of xvii Definition of xviii Definition of xx Definition of xxi Definition of xxii Definition of xxiii Definition of xxiv Definition of xxix Definition of xxv Definition of xxvi Definition of xxvii Definition of xxviii Definition of xxx Definition of xxxi Definition of xxxii Definition of xxxiii Definition of xxxiv Definition of xxxv Definition of xxxvi Definition of xxxvii Definition of xxxviii Definition of xxy Definition of xxy-syndrome Definition of xy Definition of xylaria Definition of xylaria_mali Definition of xylaria_polymorpha Definition of xylariaceae Definition of xylem Definition of xylene Definition of xylocaine Definition of xylocopa Definition of xylol Definition of xylomelum Definition of xylomelum_pyriforme Definition of xylophone Definition of xylophonist Definition of xylopia Definition of xylopia_aethiopica Definition of xylose Definition of xylosma Definition of xylosma_congestum Definition of xyphophorus Definition of xyphophorus_helleri Definition of xyridaceae Definition of xyridales Definition of xyris Definition of xyris_operculata Definition of xyy