A characteristic that neither aligns with nor belongs to opposing traits or qualities, representing a middle state.
The state of a substance that does not display acidity or alkalinity, resulting in a balanced pH level.
A grammatical category that does not conform to traditional gender distinctions, applicable to nouns or pronouns that are neither masculine nor feminine.
An appearance of sexual characteristics that is ambiguous or lacks definitive traits associated with either male or female identities.
Example:
リトマス紙で溶液の液性（酸性、中性、塩基性）を調べるときは、リトマス紙をすべて溶液に浸すのではなく、紙の先端の部分だけを浸します。
A subatomic particle found within an atomic nucleus that carries no electric charge and has a mass slightly greater than that of a proton.
A constituent of atomic nuclei, alongside protons, that plays a crucial role in the stability of atoms and is involved in nuclear reactions.
A type of baryon that, due to its neutral charge, is essential for the formation of various isotopes and influences the behavior of atomic components during nuclear decay processes.
A type of cleaning agent that maintains a neutral pH in water and does not break down into acidic or basic components, making it gentle on fabrics while still effective in various water conditions, including hard water.
A synthetic detergent characterized by its ability to clean without damaging materials, providing effective cleaning performance without altering the pH level of the washing solution.
A stellar remnant primarily composed of neutrons, typically around 10 kilometers in diameter, with an extremely high density, where a cubic centimeter can weigh over ten million tons, formed from the core collapse of a massive star following a supernova explosion.
A highly dense astronomical object resulting from the gravitational collapse of a massive star, characterized by its neutron-rich composition and significant mass concentrated within a relatively small volume.
A celestial body that represents the final evolutionary stage of a massive star, resulting from the extreme pressure and temperature conditions leading to the formation of neutrons after a supernova event.
A small hydrogen bomb designed to emit a high level of neutron radiation, primarily aimed at causing lethal effects on humans and living organisms while minimizing destruction to buildings and infrastructure.
A type of nuclear weapon that produces a significant amount of neutron radiation, intended to effectively eliminate life forms in a targeted area without causing extensive physical damage to the environment.
A specialized nuclear explosive that focuses on maximizing the lethality of its radiation, specifically targeting biological life while leaving the surroundings largely intact.