1. sheath - Noun
2. sheath - Verb
A case for the reception of a sword, hunting knife, or other long and slender instrument; a scabbard.
Any sheathlike covering, organ, or part.
The base of a leaf when sheathing or investing a stem or branch, as in grasses.
One of the elytra of an insect.
Source: Webster's dictionaryAccording to police, at the time of the arrest, the man had three throwing knives concealed in a sheath around his ankle. Source: Internet
A membranous appendage or fringe of hairs called the ligule lies at the junction between sheath and blade, preventing water or insects from penetrating into the sheath. Source: Internet
As a result, chloroplasts in C 4 mesophyll cells and bundle sheath cells are specialized for each stage of photosynthesis. Source: Internet
Because the job of bundle sheath chloroplasts is to carry out the Calvin cycle and make sugar, they often contain large starch grains. Source: Internet
Aramid rope must be shielded with a sheath of thermoplastic if it is to retain its strength. Source: Internet
Cross section of a myelinated axon 1. Axon 2. Nucleus of Schwann Cell 3. Schwann Cell 4. Myelin Sheath 5. Neurilemma The main purpose of a myelin layer (or sheath) is to increase the speed at which impulses propagate along the myelinated fiber. Source: Internet