List of 15-letter words containing UM

ACTINOSPHAERIUM ALUMINOSILICATE ALUMINOTHERMICS ANDROSPORANGIUM ANTHRACOTHERIUM ARGUMENTATIVELY ARTHROBACTERIUM ASSUMPTIOUSNESS AUTOLUMINESCENT BATRACHOSPERMUM BIOACCUMULATION BIOLUMINESCENCE BUMBLEBEEFISHES CARDIOPNEUMATIC CARPOSPORANGIUM CHARTOPHYLACIUM CHEIROPTERYGIUM CHROMOBACTERIUM CICRUMSPECTIONS CIRCUMAGITATION CIRCUMAMBAGIOUS CIRCUMAMBIENTLY CIRCUMAMBULATED CIRCUMAMBULATES CIRCUMAMBULATOR CIRCUMANTARCTIC CIRCUMARTICULAR CIRCUMCRESCENCE CIRCUMESOPHAGAL CIRCUMFERENTIAL CIRCUMFORANEOUS CIRCUMGESTATION CIRCUMINCESSION CIRCUMINSESSION CIRCUMJACENCIES CIRCUMLOCUTIONS CIRCUMMIGRATION CIRCUMNAVIGABLE CIRCUMNAVIGATED CIRCUMNAVIGATES CIRCUMNAVIGATOR CIRCUMPLANETARY CIRCUMPLICATION CIRCUMSATURNIAN CIRCUMSCRIBABLE CIRCUMSCRIPTION CIRCUMSCRIPTIVE CIRCUMSPECTNESS CIRCUMSTANTIATE CIRCUMTONSILLAR CIRCUMUMBILICAL CIRCUMVALLATING CIRCUMVALLATION CIRROCUMULATIVE COLUMBOTITANATE CONSUMPTIVENESS CORYNEBACTERIUM COSTOPNEUMOPEXY COUNTERARGUMENT CYLINDROSPORIUM DACTYLOPATAGIUM DEORSUMVERGENCE DEORUSUMDUCTION DEUTEROALBUMOSE DIPTEROCECIDIUM DISENCUMBERMENT DISEQUILIBRIUMS DOCUMENTATIONAL DUMBFOUNDERMENT ENTEROBACTERIUM EVANGELISTARIUM EXTRACURRICULUM FERROMOLYBDENUM GASTROPNEUMATIC GASTROPNEUMONIC GOODHUMOREDNESS GRAMMATOPHYLLUM GYMNOSPORANGIUM HEMIALBUMOSURIA HEMISTRUMECTOMY HEMOPERICARDIUM HEPATOPNEUMONIC HEPATOUMBILICAL HUMANITARIANISM HUMANITARIANIST HUMANITARIANIZE HUMDRUMMISHNESS HUMEROABDOMINAL HYDATOPNEUMATIC HYDROPERITONEUM HYPERVOLUMINOUS HYPNOSPORANGIUM HYPOALBUMINEMIA INCIRCUMSPECTLY INNUMERABLENESS INSTRUMENTALISM INSTRUMENTALIST INSTRUMENTALITY INSTRUMENTALIZE INSTRUMENTATION INSTRUMENTATIVE INTEGUMENTATION INTERAMBULACRUM MACROSPORANGIUM MAGNETOPLUMBITE MASTOIDOHUMERAL MERCURIAMMONIUM MICROSPORANGIUM MICROVOLUMETRIC MONUMENTALISING MONUMENTALIZING NEUROEPITHELIUM NONACCUMULATING NONACCUMULATION NONACCUMULATIVE NONCALUMNIATING NONCONSUMMATION NONCONTUMACIOUS NONCUMBROUSNESS NONCUMULATIVELY NONHUMOROUSNESS NONILLUMINATING NONILLUMINATION NONILLUMINATIVE NONINSTRUMENTAL NONLUMINESCENCE NONLUMINOUSNESS NONRUMINATINGLY NONTUMULTUOUSLY NUMISMATOGRAPHY NUMISMATOLOGIST OESOPHAGOSTOMUM OPTHALMOPHORIUM ORGANOMAGNESIUM OSSEOALBUMINOID OVERACCUMULATED OVERBUMPTIOUSLY OVERCIRCUMSPECT OVERCONSUMPTION OVERPRESUMPTION OVERPRESUMPTIVE OXYLUMINESCENCE PHILANTHROPINUM PHTHISIPNEUMONY PLEUROPNEUMONIA PLEUROPNEUMONIC PLUMBAGINACEOUS PNEUMATOGRAPHER PNEUMATOGRAPHIC PNEUMATOLOGICAL PNEUMATOMACHIAN PNEUMATOMACHIST PNEUMATOMORPHIC PNEUMATOPHOROUS PNEUMATOSTATICS PNEUMATOTHERAPY PNEUMOCHIRURGIA PNEUMOENTERITIS PNEUMOLITHIASIS PNEUMONECTOMIES PNEUMONOGRAPHIC PNEUMONOMYCOSIS PNEUMONOPARESIS PNEUMONOPHOROUS PNEUMONORRHAGIA PNEUMONORRHAPHY PNEUMONOTHERAPY PNEUMOPLEURITIS PNEUMOPYOTHORAX POSTMEDIASTINUM PREACCUMULATING PREACCUMULATION PREILLUMINATION PRESUMPTIVENESS PROTONEPHRIDIUM PSEUDAMBULACRUM PSEUDOBACTERIUM PSEUDOCAPITULUM PSEUDOCOLUMELLA PSEUDODELTIDIUM PSEUDOPNEUMONIA PSEUDORHEUMATIC PTYCHOPTERYGIUM PYOPNEUMOTHORAX RUMBUSTIOUSNESS SARGASSUMFISHES SCRUMPTIOUSNESS SEMIDOCUMENTARY SEMIPNEUMATICAL SEPTOCYLINDRIUM SEROALBUMINURIA SILICOALUMINATE SPLENOPNEUMONIA SPONDYLOCLADIUM SUBINTEGUMENTAL SUPERACCUMULATE SUPERASSUMPTION SUPERHUMANIZING SUPERINCUMBENCE SUPERINCUMBENCY