"Hemimetabolic" Natural Recordings by Native Speakers
Hemimetabolic refers to a type of insect development that involves a gradual process of metamorphosis, characterized by a series of distinct larval stages, each with a different physical characteristic. In hemimetabolism, the young insect, called a nymph, resembles a small adult and goes through several molts as it grows and develops. Examples of insects that undergo hemimetabolic development include cockroaches, grasshoppers, and crickets.
Hemihedrism is a term used in the field of geology to describe a type of crystal structure that has a repeating pattern of alternating right- and left-handed hexagonal rings. In other words, it refers to the arrangement of atoms or molecules in a crystal that displays a hemihedral symmetry, where the crystal appears to have a mirror symmetry about a single plane, but lacks a true mirror plane. This phenomenon is relatively rare and is often seen in certain minerals, such as oligoclase feldspar.
Hemimandibulectomy is a surgical procedure in which half of the lower jawbone (mandible) is removed. It is typically performed to treat benign or malignant tumors, infections, or injuries that affect the mandible.
Hemimetabolous refers to a type of insect developmental pattern in which the young, or nymphs, look like small versions of the adults and go through a series of molts (shedding of skin) to reach adulthood. This is in contrast to endopterygotes, which undergo a dramatic transformation, or metamorphosis, from larva to pupa to adult. Hemimetabolous insects include true flies, dragonflies, grasshoppers, and crickets. Examples of hemimetabolous insects include the common housefly, the cricket, and the dragonfly.
Hemimethylated refers to the state of a DNA molecule where only one of its two nucleotide bases has been methylated, which means a methyl group has been added to one of its nitrogen atoms. This is in contrast to fully methylated DNA where both nucleotide bases have been methylated, or demethylated DNA where neither nucleotide base has been methylated.