What 렬 means
It has no fixed meaning alone; the surrounding word supplies it. It can represent roots for order, fierceness, splitting, or inferiority. 병렬 is “parallel”; 열렬 is “ardent.” A font can draw the block differently without creating a different character.
Hangul emerged for Korean in the fifteenth century: the project is recorded in 1443 and the explanatory book was completed in 1446. It was made to provide an easier Korean writing system than Chinese characters, using consonant and vowel letters packed into syllable blocks. That design links 렬 to 열: after a vowel or ㄴ final, modern South Korean spelling uses 열 for certain roots.
Neutral in writing; the word around it supplies the tone.
Alone, it is an unfinished word fragment, not a reaction.
Don't confuse it with
1Questions people ask
1Why does 렬 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 렬
렬\B82CCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.