Ecological Niche

noun a botanical term referring to the upper part of a plant's stem where the leaves are attached

• The acrotarsium is the joint between the tarsus and the metatarsus in the anatomy of birds.
• I learned about the acrotarsium in my biology class today.
• Check out the cool acrotarsium on that bird!
• The acrotarsium represents the connection between two important parts of the body.

noun the state or quality of being adapted or suitable for a particular purpose or situation

• The adaptedness of the species to its environment is crucial for its survival.
• The adaptedness of these shoes to my feet is amazing.
• I love the adaptedness of this new app, it's so user-friendly.
• Her adaptedness to change is what sets her apart from the rest.