OpenEtymology

throughout

UKθruːˈaʊtUSθruːˈaʊt

Meaning

1prep

In every part of (a place or object)

2prep

During the whole period of (a situation or activity)

3adv

In every part of a place

4adv

During the whole of an event or period of time

Structure

word structure
1
from one side to the other, by means of, during
+
2
out
outward, outside, away

Usage

The news spread rapidly throughout the small town.

She remained loyal to her principles throughout her long career.

The house was painted white throughout.

Etymology

The word "throughout" is a compound formed in Middle English from the union of two distinct Old English adverbs/prepositions: þurh (through) and ūt (out). The literal sense of "through and out" or "all the way through to the outside" evolved to express the idea of completeness and pervasiveness. It shifted from describing a physical path that penetrates and exits an object to denoting something that is present or occurs in every part of a place or during the entire duration of a period. This semantic development illustrates how a concrete directional concept can be extended metaphorically to express abstract notions of thoroughness and universality.

Analysis

Structure
through + out=throughfrom one side to the other, by means of, during+outoutward, outside, away

- through: From Old English þurh, meaning "from one side to the other, by means of, during". A Germanic root. - out: From Old English ūt, meaning "outward, outside, away". A Germanic root.

Throughout Etymology, Origin & Meaning | wordDNA