Tertiary

(adjective)

Of third rank or order; subsequent.

Related Terms

Examples of Tertiary in the following topics:

  • Wastewater and Sewage Treatment

    • Wastewater is treated in 3 phases: primary (solid removal), secondary (bacterial decomposition), and tertiary (extra filtration).
    • Sewage treatment is done in three stages: primary, secondary and tertiary treatment .
    • Tertiary treatment (sometimes called "effluent polishing") is used to further clean water when it is being discharged into a sensitive ecosystem.

  • Preventing Psychological Disorders

    • Prevention falls into three levels: primary, secondary, and tertiary.
    • Primary prevention targets individuals who are at a high risk for developing a disorder; secondary prevention targets those who are in the early stages of a disorder; and tertiary prevention targets individuals who already have a disorder by seeking to reduce or eliminate its negative impact.
    • Tertiary prevention includes methods to reduce the negative impact of existing disorders or diseases by reducing complications and restoring lost function.
    • Examples of tertiary prevention programs include Alcoholics Anonymous (AA), diabetes control programs, and home visits to those who are chronically ill.
    • Give examples of primary, secondary, and tertiary approaches to preventing psychological disorders

  • Syphilis

    • The signs and symptoms of syphilis vary depending in which of the four stages it presents (primary, secondary, latent, and tertiary).
    • Patient with tertiary (gummatous) syphilis.
    • Bust in Musée de l'Homme, Paris.Tertiary syphilis may occur approximately three to 15 years after the initial infection, and may be divided into three different forms: gummatous syphilis (15%), late neurosyphilis (6.5%), and cardiovascular syphilis (10%).
    • Without treatment, a third of infected people develop tertiary disease.
    • People with tertiary syphilis are not infectious.

  • Reactions of Alcohols

    • Nucleophilic substitution is a common example, with SN2 conditions working best for primary alcohol synthesis and SN1 conditions affording secondary and especially tertiary alcohols.
    • Secondary and tertiary alcohols can undergo SN1 nucleophilic substitution when exposed to hydrohalic acids.
    • Although tertiary alcohols cannot be oxidized, secondary alcohols can be converted to ketones using an oxidizing agent.
    • On the left, a tertiary alcohol undergoes an SN1 reaction.

  • General Organization of the Somatosensory System

    • A somatosensory pathway will typically consist of three neurons: primary, secondary, and tertiary.
    • Tertiary neurons have cell bodies in the thalamus and project to the postcentral gyrus of the parietal lobe, forming a sensory homunculus in the case of touch.
    • Regarding posture, the tertiary neuron is located in the cerebellum.

  • Protein Structure

    • To determine how the protein gets its final shape or conformation, we need to understand these four levels of protein structure: primary, secondary, tertiary, and quaternary.
    • The tertiary structure of a polypeptide chain is its overall three-dimensional shape, once all the secondary structure elements have folded together among each other.
    • Interactions between polar, nonpolar, acidic, and basic R group within the polypeptide chain create the complex three-dimensional tertiary structure of a protein.
    • The tertiary structure of proteins is determined by hydrophobic interactions, ionic bonding, hydrogen bonding, and disulfide linkages.

  • Functional Groups

    • Similarly, a functional group can be referred to as primary, secondary, or tertiary, depending on if it is attached to one, two, or three carbon atoms .
    • They can be classified as primary, secondary, or tertiary, depending on how many carbon atoms the central carbon is attached to.

  • Oogenesis

    • This causes the secondary follicle to develop into a tertiary follicle, which then leaves the ovary 24–36 hours later.
    • An important event in the development of the tertiary follicle occurs when the primary oocyte completes the first meiotic division, resulting in the formation of a polar body and a secondary oocyte.

  • Amines

    • Tertiary amines are amines whose hydrogens have been completely replaced by organic substituents.
    • Finally, cyclic amines are those in which the nitrogen has been incorporated into a ring structure, effectively making it either a secondary or tertiary amine.
    • Typically, salts of ammonium compounds exhibit the following order of solubility in water: primary ammonium (RNH3+) > secondary ammonium (R2NH2+) > tertiary ammonium (R3NH+).

  • Food Chains and Food Webs

    • Secondary consumers are usually carnivores that eat the primary consumers, while tertiary consumers are carnivores that eat other carnivores.
    • He found that the primary producers generated 20,819 kcal/m2/yr (kilocalories per square meter per year), the primary consumers generated 3368 kcal/m2/yr, the secondary consumers generated 383 kcal/m2/yr, and the tertiary consumers only generated 21 kcal/m2/yr.
    • Primary producers are outlined in green, primary consumers in orange, secondary consumers in blue, and tertiary (apex) consumers in purple.