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1. Having different forms at different periods of the life cycle, as in stages of insect metamorphosis.
2. Differing from the standard form in size or structure: heteromorphic chromosome pairs.

het′er·o·mor′phism n.


(ˌhɛtərəʊˈmɔːfɪk) or


1. (Biology) differing from the normal form in size, shape, and function
2. (Biology) (of pairs of homologous chromosomes) differing from each other in size or form
3. (Biology) (esp of insects) having different forms at different stages of the life cycle
ˌheteroˈmorphism, ˌheteroˈmorphy n


(ˌhɛt ər əˈmɔr fɪk)

1. Biol. dissimilar in shape, structure, or magnitude.
2. Entomol. undergoing complete metamorphosis; possessing varying forms.
het`er•o•mor′phism, het′er•o•mor`phy, n.
References in periodicals archive ?
Morphology, anatomy and germination response of heteromorphic achenes of Anthemis chrysantha J.
However, the size of spherocrystals decreased and the crystal was deformed from spherical to heteromorphic shape after the frequency surpassing 165 Hz due to the intensive vibrational of PLA chains.
Given that the mangrove rivulus karyotype shows no evidence of heteromorphic sex chromosomes (Sola et al., 1997), production of males appears to be driven largely by the environment, although there is evidence for variation among genetically distinct lineages in their propensity to produce males (Turner et al., 2006).
An alleged heteromorphic CLD was derived by Kawai, and the model was established by introducing the "critical" S-N curve concept [31, 32].
Generally, the roadway with the circular plastic zone is more stable and has better integrity than those with the heteromorphic plastic zone with the same extension area.
This karyotype is characterised by one A/M heteromorphic pair of chromosomes resulting from an AM-inversion, with the remaining chromosomes either A or [A.sup.M], with heterochromatic arms acquired by C-band elongation.
Inflorescences axillary or terminal, racemose, 2-33-flowered; bracts persistent or deciduous; bracteoles absent; flowers zygomorphic or asymmetric; Sepals 5, two smaller and three larger; petals 5, yellow or orange base; stamens 7, heteromorphic, 4 smaller median, subsessile, fillet erect, 2-3 abaxial larger, 2 laterals, fillets curved, twice the length of the anthers, 1 central, fillet erect, less than anther, 3-4 adaxialstaminodes or or absent, anthers dehiscent through apical sutures.
6A) and FN=99 (MN82943, from Fazenda Ilha, locality 43) composed by 19 pairs of biarmed and 10 pairs of acrocentric chromosomes, and a heteromorphic pair of small chromosomes (Fig.
Seed heteromorphic is a special case of within-individual variation in seed size.
The two ACU males had a heteromorphic pericentric inversion on pair 4, which was metacentric/acrocentric, explaining the odd FN.