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There are 6 fifteen-letter words containing TOPO

GALACTOPOIETICS	• GALACTOPOIETIC n. a milk-producing agent.
HEMATOPORPHYRIN	• hematoporphyrin n. (Biochemistry) The porphyrin portion of heme (minus the iron atom). • HEMATOPORPHYRIN n. any of several porphyrins that are hydrated derivatives of protoporphyrins.
PHOTOTOPOGRAPHY	• phototopography n. The surveying and mapping of a terrain based solely on terrestrial photographs. • PHOTOTOPOGRAPHY n. the preparation of topographic maps from photographs.
PROTOPORPHYRINS	• protoporphyrins n. Plural of protoporphyrin. • PROTOPORPHYRIN n. metal-free porphyrin derived from blood hemin.
TOPOCHEMISTRIES	• TOPOCHEMISTRY n. the study of reactions that only occur at specific regions in a system.
TOPOGRAPHICALLY	• topographically adv. In a topographic manner. • topographically adv. Regarding topography. • TOPOGRAPHICAL adv. relating to topography, also TOPOGRAPHIC.

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 1Word.ws and WikWik.org.

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English Wiktionary: 62 words
Scrabble in French: 2 words
Scrabble in Spanish: 2 words
Scrabble in Italian: 6 words
Scrabble in German: no word
Scrabble in Romanian: 23 words

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