
1) Captain hicks 2) Digit 3) Figure 4) Group of six 5) Half a dozen 6) Half dozen 7) Hockey lineup 8) Hockey team 9) Not accidental 10) One out of six 11) Series of six 12) Sestet 13) Sextet 14) Sextuplet 15) Sise 16) Six group of 17) Sixer 18) Sixsome 19) The McLaughlin Group plus one 20) Trio times two
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https://www.crosswordclues.com/clue/hexad

1) Sestet 2) Sextuplet 3) Sise 4) Sixer
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https://www.crosswordclues.com/clue/hexad

• (n.) An atom whose valence is six, and which can be theoretically combined with, substituted for, or replaced by, six monad atoms or radicals; as, sulphur is a hexad in sulphuric acid. Also used as an adjective.
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http://thinkexist.com/dictionary/meaning/hexad/

(hek´sad) a group or combination of six similar or related entities. an element with a valence of six.
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http://www.encyclo.co.uk/local/21001
Hex'ad noun [ Latin
hexas ,
hexadis , the number six, Greek ..., ..., from
'e`x six.]
(chem.) An atom whose valence is six, and which can be theoretically combined with, substituted for, or replaced by,
six monad atoms or radicals; as, sulphur is a
hexad i...
Found on
http://www.encyclo.co.uk/webster/H/41

Type: Term Pronunciation: heks′ad Definitions: 1. A sexivalent element or radical.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=40872
No exact match found.