imaginary number (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
imagery the ability to form mental pictures of things or events
pure imaginary number an imaginary number of the form a+bi where a is 0
imaginary place a place that exists only in imagination
imaginary part the part of a complex number that has the square root of -1 as a factor
ignorance the lack of knowledge or education
ignorant uneducated in general; lacking knowledge or sophistication
imagination image a mental image produced by the imagination
Avogadro number the number of molecules in a mole of a substance
irrational number a real number that cannot be expressed as a rational number
imaginary being a creature of the imagination
magic number the atomic number of an extra stable strongly bound atomic nucleus: 2, 8, 20, 28, 50, 82 or 126
imaginary creature a creature of the imagination
imaginary not based on fact; unreal
ordinal number the number designating place in an ordered sequence
imagination the ability to form mental pictures of things or events
ignorantness ignorance (especially of orthodox beliefs)
imaginativeness the formation of a mental image of something that is not perceived as real and is not present to the senses
atomic number quantity of protons in the nucleus of an atom of an element
imaginative comparison the kind of mental comparison that is expressed in similes or metaphors or allegories