Definition: The act of replacing one thing with another, or the thing that is used as a replacement.

Example: The teacher made a substitution in the schedule to accommodate the guest speaker.

Definition: Relating to the act of replacing one thing with another or using a substitute.

Example: In chemistry, substitutional alloys are formed when one metal replaces another in the crystal structure.

Definition: This word describes something that can be used in place of another thing.

Example: In cooking, a substitutive ingredient can replace the original one if it's not available.

Definition: A layer or material that lies underneath something else, often providing support or a surface for growth or development.

Example: The scientist examined the substrate to understand how the bacteria were growing.

Definition: A layer or foundation that supports something else, often found beneath the surface or as a base for other materials.

Example: The archaeologists discovered a substratum of ancient pottery beneath the soil.

Definition: Relating to a part of a structure that is below the main level or foundation.

Example: The engineers studied the substructural elements to ensure the building's stability.

Definition: A part that supports a larger structure, often serving as its foundation or base.

Example: The engineers examined the substructure to ensure it could support the new building.

Definition: Able to be included or categorized within a larger group or concept.

Example: The smaller theories are subsumable under the broader scientific framework.

Definition: To include or classify something as part of a larger group or category.

Example: In biology, a specific species can be subsumed under a broader genus.

Definition: Relating to or located beneath a surface, especially under the ground or water.

Example: The subsurface layers of soil are important for plant growth.

Definition: Material that is located just below the surface of the ground, such as soil or rock that is not visible from above.

Example: The construction project required drilling into the subsurface to assess the soil conditions.