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List of 6-letter words beginning with

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There are 20 six-letter words beginning with IS

ISABEL• isabel n. Synonym of isabella (“the colour”).
• Isabel prop.n. A female given name from Hebrew.
• Isabel prop.n. (Rare) A surname originating as a matronymic.
ISATIN• isatin n. (Organic chemistry) The indole derivative 1H-indole-2,3-dione, used in the synthesis of dyes.
• ISATIN n. a substance obtained by oxidising indigo, also ISATINE.
ISCHIA• ischia n. Plural of ischium.
• Ischia prop.n. An island in the Bay of Naples.
• Ischia prop.n. The major town on this island.
ISLAND• island n. A contiguous area of land, smaller than a continent, totally surrounded by water.
• island n. (By extension, in place names) A contiguous area of land, smaller than a continent, partially surrounded…
• island n. An entity surrounded by other entities that are very different from itself.
ISLETS• islets n. Plural of islet.
• ISLET n. a small island.
ISLING• ISLE v. to place on a small island.
ISOBAR• isobar n. (Meteorology) A line drawn on a map or chart connecting places of equal or constant pressure.
• isobar n. (Thermodynamics) A set of points or conditions at constant pressure.
• isobar n. (Nuclear physics) Either of two nuclides of different elements having the same mass number.
ISOGON• isogon n. (Mathematics) An equiangular polygon.
• isogon n. (Cartography, meteorology) A line of equal or constant wind direction on a graph or chart, such as a weather map.
• isogon n. (Cartography, navigation) A line of equal or constant magnetic declination on a chart; an isogonic line.
ISOHEL• isohel n. A line on a map connecting places that receive equal solar radiation, or equal daily hours of sunshine.
• ISOHEL n. a map line indicating points of equal sunshine.
ISOLEX• isolex n. An isogloss indicating where a certain word is used.
• ISOLEX n. a line delineating a geographical region where a vocabulary item is used.
ISOLOG• isolog n. Alternative form of isologue.
• ISOLOG n. an organic compound with similar molecular structure to another but containing different atoms of the same valency, also ISOLOGUE.
ISOMER• isomer n. (Chemistry) Any of two or more compounds with the same molecular formula but with different structure.
• isomer n. (Physics) Any of two or more atomic nuclei with the same mass number and atomic number but with different…
• ISOMER n. a body or compound which is isomeric with another body or compound, also ISOMERE.
ISOPOD• isopod n. Any of very many crustaceans, of the order Isopoda, that have a flattened body and no carapace.
• ISOPOD n. any crustacean of the order Isopoda, that includes woodlice etc., also ISOPODAN.
ISSEIS• isseis n. Plural of issei.
• ISSEI n. (Japanese) a Japanese immigrant to the United States.
ISSUED• issued v. Simple past tense and past participle of issue.
• ISSUE v. to put into circulation.
ISSUER• issuer n. One who issues, emits, or publishes.
• ISSUER n. one who issues.
ISSUES• issues n. Plural of issue.
• issues v. Third-person singular simple present indicative form of issue.
• Issues n. Plural of Issue.
ISTANA• ISTANA n. (Malay) in Malaysia, a royal palace.
ISTHMI• isthmi n. Plural of isthmus.
• ISTHMUS n. (Latin) a strip of land connecting two larger land masses.
ISTLES• istles n. Plural of istle.
• ISTLE n. (Nahuatl) a strong fibre obtained from agave, also IXTLE.

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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