hepˈtachord noun

1. (Gr chordē string) in Greek music, a diatonic series of seven tones, containing five whole steps and one half step
2. An instrument with seven strings
3. An interval of a seventh

hepˈtad noun

1. (Gr heptas, heptados) a group of seven
2. An atom, radical or element having a combining power of seven (chem)

hepˈtagon noun

(Gr heptagōnos, from gōniā an angle) a plane figure with seven angles and seven sides

heptagˈonal adjective

Heptagynia /-jinˈi-ə/ plural noun

(Gr gynē woman, female) in Linnaean classification, an order of plants (in various classes) having seven styles

heptagˈynous adjective

heptahēˈdron noun

(Gr hedrā a base) a solid bounded by seven plane faces

Heptamˈeron noun

(Gr hēmerā a day) a book containing the transactions of seven days, esp the collection of stories told in seven days bearing the name of Queen Margaret of Navarre (1492–1549)

heptamˈerous adjective

(Gr meros part) having parts in sevens

heptamˈeter noun

(Gr metron measure) a verse of seven measures or feet

Heptanˈdria plural noun

(Gr anēr, andros a man, male) a Linnaean class of plants having seven stamens

heptanˈdrous adjective

With seven stamens

hepˈtane noun

A hydrocarbon (C₇H₁₆) with many isomers, seventh of the alkane series

heptapodˈic adjective

heptapˈody noun

(Gr pous, podos foot) a verse of seven feet

hepˈtarch or hepˈtarchist noun

A ruler in a heptarchy

heptarˈchic adjective

heptarchy /hepˈtär-ki/ noun

1. (Gr archē sovereignty) a government by seven persons
2. A country governed by seven
3. A misleading term for a once supposed system of seven English kingdoms, these being Wessex, Sussex, Kent, Essex, East Anglia, Mercia, and Northumbria

heptasyllabˈic adjective

Seven-syllabled

Hepˈtateuch /-tūk/ noun

(Gr teuchos instrument, volume) the first seven books of the Old Testament

heptateuchˈal adjective

heptathˈlete noun

A competitor in a heptathlon

heptathˈlon noun

(Gr athlon contest) a seven-event contest consisting of 100 metres hurdles, shot put, javelin, high jump, long jump, 200 metres sprint and 800 metres race

heptatonˈic adjective (Gr tonos tone; music; of a scale)

Consisting of seven notes