heterogametic /-gə-metˈik/ adjective

(heterogametic sex the sex that is heterozygous for the sex-determining chromosome, the male in mammals, the female in birds)

heterogˈamous adjective

heterogˈamy noun

1. (Gr gamos marriage) alternation of generations (biology)
2. Reproduction by unlike gametes (biology)
3. The presence of different kinds of flower (male, female, hermaphrodite, neuter, in any combination) in the same inflorescence (botany)
4. Indirect pollination (botany)

heterogenēˈity noun

heterogeneous /-jēˈni-əs/ adjective

1. (Gr heterogenēs, from genos a kind) different in kind
2. Composed of parts of different kinds, opp to homogeneous

heterogeˈneously adverb

heterogeˈneousness noun

heterogenesis /-jenˈi-sis/ noun (Gr genesis generation; biology)

The alternation of generations

heterogenetic /-ji-netˈik/ adjective

heterogeny /-ojˈən-i/ noun

1. A heterogeneous group or assemblage
2. Heterogenesis

heterogonous /-ogˈə-/ adjective

1. (Gr gonos offspring, begetting) having flowers differing in length of stamens (botany)
2. Reproducing both sexually and asexually (biology)

heterogˈony noun

hetˈerograft noun

A graft of tissue from a member of one species to a member of another species

hetˈerokont or hetˈerocont noun

(Gr kontos a punting pole) any member of the Heterocontˈae or yellow-green algae (eg the common Conferva), a class usually characterized by the pair of unequal cilia on the motile cells

heterokontˈan adjective

heterologous /-olˈə-gəs/ adjective

1. Not homologous
2. Different
3. Of different origin
4. Abnormal

heterolˈogy noun

Lack of correspondence between apparently similar structures due to different origin

heteromˈerous adjective

1. (Gr meros part) having different numbers of parts in different whorls (botany)
2. (of lichens) having the algal cells in a layer (botany)
3. Having unlike segments (zoology)

heteromorˈphic or heteromorˈphous adjective

1. (Gr morphē form) deviating in form from a given type
2. Of different forms

heteromorˈphism or hetˈeromorphy noun

heteronˈomous adjective

1. (Gr nomos law) subject to different laws
2. Subject to outside rule or law, opp to autonomous

heteronˈomy noun

hetˈeronym noun

A word of the same spelling as another but of different pronunciation and meaning

heteroousian /het-ər-ō-ooˈsi-ən or -owˈ/ or heterousian /-ooˈ, -owˈ or -ō-ooˈ/ adjective (often with cap)

1. (Gr ousiā being) of unlike essence
2. Believing the Father and Son to be of different substance

noun

(often with cap) a holder of such belief

heterophyllous /-filˈəs/ adjective

(Gr phyllon a leaf) having different kinds of foliage leaf

hetˈerophylly noun

heteroplasia /-plāˈz(h)i-ə or -si-ə/ noun

(Gr plasis a forming) development of abnormal tissue or tissue in an abnormal place

heteroplastic /-plasˈtik/ adjective

hetˈeroplasty noun

1. Heteroplasia
2. Grafting of tissue from another person

hetˈeropod noun

Heteropˈoda plural noun

(Gr pous, podos a foot) pelagic gastropods in which the foot has become a swimming organ

heteropōˈlar adjective

Having alternating or opposite polarity

Heteropˈtera plural noun

(Gr pteron a wing) a suborder of insects, the bugs, Hemiptera with fore and hind wings (when present) markedly different

heteropˈteran noun and adjective

heteropˈterous adjective

heteroscian /het-ər-oshˈi-ən/ noun

(Gr skiā a shadow) a dweller in a temperate zone, whose noon-shadow is always thrown one way, either north or south

heterosexˈism noun

The belief that homosexuality is a perversion, used as grounds for discrimination against homosexuals

heterosexˈist noun

Someone who discriminates against homosexuals (also adjective)

heterosexˈūal adjective

Having or relating to sexual attraction towards the opposite sex

noun

A person who is sexually attracted to the opposite sex

heterosexualˈity noun

heterōˈsis noun (biology)

1. Cross-fertilization
2. The increased size and vigour (relative to its parents) often found in a hybrid

Heterosōˈmata plural noun

(Gr sōma (pl sōmata) a body) the flatfishes

heterosōˈmatous adjective

heterospecifˈic adjective

1. (of blood or serum) belonging to different groups
2. Derived from different species

heterosporous /-osˈpor-əs, or -pōrˈ or -pörˈ/ adjective

Having different kinds of asexually-produced spores

heterosˈpory noun

heterostrophˈic adjective

1. (Gr strophē a turning) consisting of unequal strophes
2. Coiled contrary to the usual direction

heterosˈtrophy noun

hetˈerostyled or heterostyˈlous adjective

Having styles of different length in different flowers

heterostylˈism noun

hetˈerostyly noun

heterotactˈic adjective

heterotaxˈis or hetˈerotaxy noun

(Gr taxis arrangement) anomalous arrangement of eg parts of the body, etc

heterothallˈic adjective (Gr thallos a shoot; botany)

(of certain fungi) having two physiologically different types of mycelium, called plus and minus, comparable to male and female

heterothallˈism or hetˈerothally noun

heterotherˈmal adjective

(Gr thermos heat) of animals, with a body temperature like that of its surroundings

heterotˈic adjective

Relating to or showing heterosis

heterotōˈpia noun

Displacement of an organ of the body

heterotopˈic adjective

hetˈerotroph noun

A heterotrophic organism

heterotrophˈic adjective

heterotˈrophy noun (Gr trophē livelihood; botany)

Dependence (immediate or ultimate) upon green plants for carbon (as in most animals, fungi, etc)

heterotypˈic adjective

1. Differing from the normal condition
2. Relating to the first (reductional) division in meiosis (biology), see also homotypic under homo-

heterousian adjective see heteroousian above

heterozygosˈity noun

The mixed ancestry of heterozygotes

heterozygote /-zīˈgōt/ noun

(Gr zygōtos yoked, from zygon yoke) a zygote or individual formed from gametes differing with respect to some pair of alternative characters

heterozyˈgous adjective