As nouns the difference between sign and hyperboloid

is that sign is (sometimes|also used uncountably) a visible indication while hyperboloid is a particular surface in three-dimensional euclidean space, the graph of a quadratic with all three variables squared and their coefficients not all of the same sign.

As a verb sign

is to make a mark.

As nouns the difference between sheet and hyperboloid

is that sheet is a thin bed cloth used as a covering for a mattress or as a layer over the sleeper while hyperboloid is a particular surface in three-dimensional Euclidean space, the graph of a quadratic with all three variables squared and their coefficients not all of the same sign.

As a verb sheet

is to cover or wrap with cloth, or paper, or other similar material.

Hyperboloidal is a derived term of hyperboloid.

As an adjective hyperboloidal

is having the shape or form of a hyperboloid.

As a noun hyperboloid is

a particular surface in three-dimensional euclidean space, the graph of a quadratic with all three variables squared and their coefficients not all of the same sign.

As a noun mathematician

is an expert on mathematics.

As a proper noun archimedes is

an ancient greek mathematician, physicist and engineer.

As a proper noun odin

is .

As a noun valkyrie is

(norse mythology) any of the female attendants of odin, figures said to guide fallen warriors from the battlefield to valhalla.

As a proper noun valhalla

is in norse mythology, the home of warriors slain gloriously in battle.

As a noun valkyrie is

(norse mythology) any of the female attendants of odin, figures said to guide fallen warriors from the battlefield to valhalla.

Pentanoic is a synonym of valeric.

As adjectives the difference between pentanoic and valeric

is that pentanoic is of or pertaining to pentanoic acid or its derivatives while valeric is (organic chemistry) of, pertaining to, or derived from valeric acid.

Transmigratory is a related term of transmigrator.

As an adjective transmigratory

is of, pertaining to, or undergoing transmigration, as a soul from one body to another.

As a noun transmigrator is

a transmigrant.

As a proper noun channel

is (by ellipsis) the english channel.

As a noun streambed is

a channel through which a stream flows or used to flow.

As nouns the difference between stream and streambed

is that stream is a small river; a large creek; a body of moving water confined by banks while streambed is a channel through which a stream flows or used to flow.

As a verb stream

is to flow in a continuous or steady manner, like a liquid.