nucleus

núcleo

Parte central de algo, especialmente de un átomo o una célula viva.

En inglés sencillo: The central part of something, especially an atom or a living cell.

• The nucleus lies at the center of the atom.
• Electrons move around the nucleus.
• Scientists studied the nuclei of several different atoms.

Cómo se usa: nucleus of something (The nucleus of an atom contains protons.)

Sinónimos: core

Expresiones frecuentes: atomic nucleus, central nucleus, nucleus of something

núcleo celular

Parte de una célula rodeada por una membrana fina y que contiene su información genética.

En inglés sencillo: The part inside a cell, surrounded by a thin covering, that holds its genetic information.

• The nucleus holds the cell’s genetic information.
• She could see the nucleus through the microscope.
• These cells have two nuclei.

Cómo se usa: nucleus of a cell (The nucleus of a cell contains DNA.)

Sinónimos: cell nucleus

Expresiones frecuentes: cell nucleus, nucleus membrane, nucleus of something

núcleo, base

Pequeño grupo o conjunto inicial que crecerá al añadirse más personas o cosas.

En inglés sencillo: A small starting group or collection that will grow as more people or things are added.

• Five volunteers formed the nucleus of the team.
• Her books became the nucleus of a new library.
• We built the club around a small nucleus of friends.

Cómo se usa: nucleus of something (These books formed the nucleus of our collection.)

Sinónimos: core, foundation

Expresiones frecuentes: form the nucleus, nucleus of something, a small nucleus