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The Collaborative International Dictionary
Dimorphism

Dimorphism \Di*mor"phism\, n. [Cf. F. dimorphisme.]

  1. (Biol.) Difference of form between members of the same species, as when a plant has two kinds of flowers, both hermaphrodite (as in the partridge berry), or when there are two forms of one or both sexes of the same species of butterfly.

    Dimorphism is the condition of the appearance of the same species under two dissimilar forms.
    --Darwin.

  2. (Crystallog.) Crystallization in two independent forms of the same chemical compound, as of calcium carbonate as calcite and aragonite.

Wiktionary
dimorphism

n. 1 (context biology English) The occurrence within a plant of two distinct forms of any part. 2 (context biology English) The occurrence in an animal species of two distinct types of individual. 3 (context geology English) A property of certain substances that enables them to exist in two distinct crystalline forms.

WordNet
dimorphism
  1. n. (chemistry) the property of certain substances that enables them to exist in two distinct crystalline forms

  2. (biology) the existence of two forms of individual within the same animal species (independent of sex differences)

Wikipedia
Dimorphism

Dimorphism or dimorphic may refer to:

  • Sexual dimorphism, a phenotypic difference between males and females of the same species,
  • Nuclear dimorphism, when a cell's nuclear apparatus is composed of two structurally and functionally differentiated types of nuclei
  • Frond dimorphism, differing forms of fern fronds between the sterile and fertile fronds
  • Phenotypic dimorphism, switching between two cell-types.
    • Dimorphic fungi, fungi which undergo this type of switching

Usage examples of "dimorphism".

But she did have strange feelings, and a sense of the radical dimorphism that separated the sexes in her species, a dimorphism that did not stop with, nor was it limited to, certain differentials of size and hardness, of smallness, of softness, and lusciousness.

These things, incidentally, fit into a harmonious physical and psychological dimorphism of the sexes, in which the male, unless reduced, denied or crippled, is dominant.

This sexual dimorphism and the dominance/submission equations do not require institutionalized slavery.

Given the minimal sexual dimorphism of the Delkasu species, strong-arm types were as likely as not to be female.

Nevertheless, it seems clear that past and present human dimorphisms are legitimate topics for careful discussion.

On many worlds it is well known, though on others the information is suppressed, that biological realities exist, such as dominance and submission, strength and vulnerability, reciprocal needs, jealousy, possessiveness, protectiveness, sexual dimorphism and its meaning, claimancy and command, behavioral genetics, readinesses to respond to sign stimuli, longings for completeness, the desire to belong to, and yield to, the master animal, and such.

The sexual dimorphism among the owoc makes the miniscule differences between human males and females positively subatomic.

The actual social structure of those chimps that were to become human is not known, but there does seem to have been an increased sexual dimorphism: the males became significantly larger than the females.

What he thought about sexual dimorphism was mostly charitable compassion for the nasty predicaments females found themselves in every month, and the even worse ones that confronted them in childbearing.

These physical features suggest elevated levels of hormones linked with sexual differentiation and sexual dimorphism.

He surveyed the length of her body, shocked slightly once again by the various manifestations of sexual dimorphism.