What does the word "spectra" mean?

Question

I was looking for the PLURAL - I.E. SPECTRA - something that haunts or troubles the mind... kind of answer. It is a noun and you all did find except for the last kid... I DONT WATCH BOLD AND BEAUTIFUL?????? WHAT KIND OF ANSWER IS THAT? any way, thanks everyone. I researched it myself and got more what I wanted. By the way, sprectra is plural noun, derivitave word of spectrum, spectre, etc.

Answer 1

Main Entry: spec·trum
Pronunciation: \ˈspek-trəm\

Function: noun

Inflected Form(s): plural spec·tra \-trə\ or spectrums
Etymology: New Latin, from Latin, appearance — more at specter
Date: 1671

1 a: a continuum of color formed when a beam of white light is dispersed (as by passage through a prism) so that its component wavelengths are arranged in order b: any of various continua that resemble a color spectrum in consisting of an ordered arrangement by a particular characteristic (as frequency or energy): as (1): electromagnetic spectrum (2): radio spectrum (3): the range of frequencies of sound waves (4): mass spectrum c: the representation (as a plot) of a spectrum

2 a: a continuous sequence or range b: kinds of organisms associated with a particular situation (as an environment) c: a range of effectiveness against pathogenic organisms

Answer 2

Meaning Of Spectra

Answer 3

NOUN:
pl. spec·tra (-tr) KEY or spec·trums
Physics The distribution of a characteristic of a physical system or phenomenon, especially:
The distribution of energy emitted by a radiant source, as by an incandescent body, arranged in order of wavelengths.
The distribution of atomic or subatomic particles in a system, as in a magnetically resolved molecular beam, arranged in order of masses.
A graphic or photographic representation of such a distribution.

A range of values of a quantity or set of related quantities.
A broad sequence or range of related qualities, ideas, or activities: the whole spectrum of 20th-century thought.

Answer 4

Spectra means more than one spectrum, or continuum.

This should not be confused with a specter, or spectre, which is a ghost or phantasm.

EDIT - Please note that unlike "Curious," I did not change my answer after putting the wrong one.

Answer 5

Isn't it the fashion company in "The Bold and the Beautiful"?