Definition: A layer of mucus that a snail or mollusk uses to close itself inside its shell, especially during hibernation, or a membrane that acts as a barrier in certain structures.

Example: The snail created an epiphragm to protect itself from the cold during winter.

Definition: A device used to project images of opaque objects, such as photographs, onto a surface.

Example: The teacher used an episcope to show the students images from the science experiment.

Definition: In a way that relates to an episome, which is a genetic element that can exist independently of chromosomal DNA.

Example: The virus replicated episomally within the host cells, allowing for a unique method of gene expression.

Definition: A genetic interaction where one gene can hide or suppress the effect of another gene that is not its allele.

Example: In genetics, epistasis can significantly influence the traits of an organism by masking the effects of other genes.

Definition: Relating to a method of growing a crystalline layer on a substrate in a specific orientation.

Example: The researchers used an epitaxial process to create high-quality semiconductor materials.

Definition: In a manner that relates to the growth of a crystalline layer on a substrate, where the layer follows the crystallographic orientation of the underlying material.

Example: The semiconductor was deposited epitaxially to ensure optimal electronic properties.

Definition: The process of growing crystals of one material on the surface of another material, where both have the same crystal structure.

Example: Epitaxy is often used in the production of semiconductors to create layers of materials with specific properties.

Definition: To form or develop a layer of epithelial tissue over a surface or wound.

Example: The doctor explained that the skin would epithelize over the wound in a few days.

Definition: A specific part of an antigen that can trigger an immune response and bind to a particular antibody.

Example: The vaccine was designed to target a specific epitope on the virus.

Definition: A chemical reaction that changes a compound, particularly an alkene, into an epoxide, which is a type of cyclic ether.

Example: The process of epoxidation is important in organic chemistry for creating epoxides from alkenes.