Ichthyocoprolite (n.)
definition: Fossil dung of fishes.

Ichthyocoprolite is a 16 letter word that begins with an I and ends in an E

Ichthyopterygium (n.)
definition: The typical limb
Or lateral fin of fishes.
Ichthyopterygium is a 16 letter word that begins with an I and ends in an M

Icositetrahedron (n.)
definition: A twenty-four-sided solid; a tetragonal trisoctahedron or trapezohedron.

Icositetrahedron is a 16 letter word that begins with an I and ends in an N

Idiocyclophanous (a.)
definition: Same as Idiophanous.

Idiocyclophanous is a 16 letter word that begins with an I and ends in an S

Imaginationalism (n.)
definition: Idealism.

Imaginationalism is a 16 letter word that begins with an I and ends in an M

Immeasurableness (n.)
definition: The state or quality of being immeasurable.

Immeasurableness is a 16 letter word that begins with an I and ends in an S

Immethodicalness (n.)
definition: Want of method.

Immethodicalness is a 16 letter word that begins with an I and ends in an S

Impenetrableness (n.)
definition: The quality of being impenetrable; impenetrability.

Impenetrableness is a 16 letter word that begins with an I and ends in an S

Imperceptibility (n.)
definition: The state or quality of being imperceptible.

Imperceptibility is a 16 letter word that begins with an I and ends in a Y

Imperfectibility (n.)
definition: The state or quality of being imperfectible.

Imperfectibility is a 16 letter word that begins with an I and ends in a Y

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