As adjectives the difference between rectangular and squarelike

is that rectangular is having a shape like a rectangle while squarelike is resembling a square.

In geology terms the difference between glacial and stadial

is that glacial is of the Pleistocene period dominated by the presence of glaciers while stadial is a short, colder period within an interglacial; a stade.

As a proper noun Glacial

is of the Pleistocene period dominated by the presence of glaciers.

As a noun stadial is

a short, colder period within an interglacial; a stade.

As a proper noun stade

is a city in lower saxony, germany.

As an adjective stadial is

(geology) pertaining to a glacial stade.

As a noun stadial is

(geology) a short, colder period within an interglacial; a stade.

As a noun spheroplast

is (cytology) a cell from which the cell wall has been removed.

As an adjective spheroplasted is

that has been converted into a spheroplast.

As a noun satrap

is satrap (governor of a province in ancient persia).

As a proper noun atropatene is

(historical) an ancient kingdom established in the 4th century bc in modern-day iranian azerbaijan by the satrap.

As nouns the difference between animal and spiralian

is that animal is in scientific usage, a multicellular organism that is usually mobile, whose cells are not encased in a rigid cell wall (distinguishing it from plants and fungi) and which derives energy solely from the consumption of other organisms (distinguishing it from plants) while spiralian is (zoology) any animal that exhibits a spiral cleavage pattern (typically molluscs).

As an adjective animal

is of or relating to animals.

As nouns the difference between spiral and spiralian

is that spiral is spiral while spiralian is (zoology) any animal that exhibits a spiral cleavage pattern (typically molluscs).

As nouns the difference between cleavage and spiralian

is that cleavage is the act of cleaving or the state of being cleft while spiralian is (zoology) any animal that exhibits a spiral cleavage pattern (typically molluscs).

Speedometer is a related term of speedometry.

As nouns the difference between speedometer and speedometry

is that speedometer is a device that measures, and indicates the current speed of a vehicle while speedometry is the measurement of speed.

As nouns the difference between polyamine and spermine

is that polyamine is (organic chemistry) any compound having many (more than three) amino functional groups; especially such compounds formed by decomposition of proteins while spermine is (organic compound) a polyamine, n,n'-bis(3-aminopropyl) butane-1,4-diamine , originally extracted from sperm, that is involved in cellular metabolism.