Science, Tech, Math › Science Karyo- or Caryo- Biology Prefixes and Suffixes Share Flipboard Email Print KATERYNA KON/SCIENCE PHOTO LIBRARY / Getty Images Science Biology Basics Cell Biology Genetics Organisms Anatomy Physiology Botany Ecology Chemistry Physics Geology Astronomy Weather & Climate By Regina Bailey Biology Expert B.A., Biology, Emory University A.S., Nursing, Chattahoochee Technical College Regina Bailey is a board-certified registered nurse, science writer and educator. Her work has been featured in "Kaplan AP Biology" and "The Internet for Cellular and Molecular Biologists." our editorial process Regina Bailey Updated February 08, 2019 The prefix (karyo- or caryo-) means nut or kernel and also refers to the nucleus of a cell. Examples Caryopsis (cary-opsis): fruit of grasses and grains that consists of a single-celled, seed-like fruit. Karyocyte (karyo-cyte): a cell that contains a nucleus. Karyochrome (karyo-chrome): a type of nerve cell in which the nucleus stains easily with dyes. Karyogamy (karyo-gamy): uniting of cell nuclei, as in fertilization. Karyokinesis (karyo-kinesis): division of the nucleus that occurs during the cell cycle phases of mitosis and meiosis. Karyology (karyo-logy): the study of the structure and function of the cell nucleus. Karyolymph (karyo-lymph): the aqueous component of the nucleus in which the chromatin and other nuclear components are suspended. Karyolysis (karyo-lysis): the dissolution of the nucleus that occurs during cell death. Karyomegaly (karyo-mega-ly): abnormal enlargement of the cell nucleus. Karyomere (karyo-mere): a vesicle containing a small portion of the nucleus, typically following abnormal cell division. Karyomitome (karyo-mitome): chromatin network within the cell nucleus. Karyon (karyon): the cell nucleus. Karyophage (karyo-phage): a parasite that engulfs and destroys the nucleus of a cell. Karyoplasm (karyo-plasm): the protoplasm of the nucleus of a cell; also known as nucleoplasm. Karyopyknosis (karyo-pyk-nosis): shrinkage of the cell nucleus that is accompanied by the condensation of chromatin during apoptosis. Karyorrhexis (karyo-rrhexis): stage of cell death in which the nucleus ruptures and disperses its chromatin throughout the cytoplasm. Karyosome (karyo-some): dense mass of chromatin in the nucleus of a non-dividing cell. Karyostasis (karyo-stasis): stage of the cell cycle, also known as interphase, where the cell undergoes a period of growth in preparation for cell division. This stage occurs between two successive divisions of the cell nucleus. Karyotheca (karyo-theca): double membrane that encloses the contents of the nucleus, also known as the nuclear envelope. Its outer portion is continuous with the endoplasmic reticulum. Karyotype (karyo-type): an organized visual representation of the chromosomes in the cell nucleus arranged according to characteristics such as number, size, and shape.