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There are 6 twelve-letter words beginning with PNEUMO

PNEUMOCOCCAL	• pneumococcal adj. Of, pertaining to or caused by a pneumococcus bacterium. • PNEUMOCOCCAL adj. of or like a pneumococcus, a bacterium that causes an acute pneumonia involving one or more lobes of the lung.
PNEUMOCOCCUS	• pneumococcus n. A gram-positive bacterium, Streptococcus pneumoniae, that causes pneumonia and other infectious diseases. • PNEUMOCOCCUS n. a bacterium that causes an acute pneumonia involving one or more lobes of the lung.
PNEUMOCYSTIS	• pneumocystis n. (Pathology) A parasitic fungal organism of the genus Pneumocystis, in humans specifically Pneumocystis jorevicii. • Pneumocystis prop.n. A taxonomic genus within the family Pneumocystidaceae – fungi first thought to be protozoa, including… • PNEUMOCYSTIS n. any protozoan of the genus Pneumocystis, esp. P. carinii, which is a cause of pneumonia.
PNEUMOGRAPHS	• pneumographs n. Plural of pneumograph. • PNEUMOGRAPH n. an instrument for measuring and recording respiration.
PNEUMONOLOGY	• pneumonology n. Alternative form of pneumology. • PNEUMONOLOGY n. the study of the respiratory system.
PNEUMOTHORAX	• pneumothorax n. (Medicine) Presence of air inside the pleural cavity, usually caused by injury either to the lung or the chest wall. • PNEUMOTHORAX n. accumulation of air or gas in the pleural cavity.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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English Wiktionary: 26 words
Scrabble in French: 6 words
Scrabble in Spanish: no word
Scrabble in Italian: 9 words
Scrabble in German: no word
Scrabble in Romanian: 21 words

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