4 syllables: Tox, i, ci, ty. Stress on i.
tahk-SIS-uh-tee
/tɑˈksɪsəti/
Toxicity is pronounced tahk-SIS-uh-tee (/tɑˈksɪsəti/). It has four syllables (Tox-i-ci-ty), with the stress on "i". Toxicity refers to the level, degree, or measure of toxicity in a substance, organism, or environment; it denotes how poisonous or harmful it is. In scientific contexts, it often quantifies adverse effects on biological systems. In broader usage, it can describe harmfulness or toxicity of social or organizational environments. (2-4 sentences, 50-80 words).
nounToxicity refers to the level, degree, or measure of toxicity in a substance, organism, or environment; it denotes how poisonous or harmful it is. In scientific contexts, it often quantifies adverse effects on biological systems. In broader usage, it can describe harmfulness or toxicity of social or organizational environments. (2-4 sentences, 50-80 words)
"The toxicity of the chemical was carefully tested in controlled assays."
"Water toxicity levels determine safe exposure limits for aquatic life."
"Her toxicity toward the team created a hostile work environment."
Toxicity is pronounced tok-SIS-i-tee in US and UK accents, with primary stress on the second syllable: /ˌtɒkˈsɪsɪti/ (UK: /ˌtɒkˈsɪsɪti/, US: /ˌtɑkˈsɪsəti/); Australian typically aligns with /ˌtɒkˈsɪsɪti/ or /ˌtɔkˈsɪsəti/. Break it as tox-i-ci-ty, with the loudest beat on the second syllable and a soft /ti/ at the end. Think “TOK-sis-i-tee.” Audio reference: refer to standard dictionaries for the exact file.
Common errors include stressing the first syllable (TOX-i-ci-ty) and slurring the middle syllables into one: say tok-SIS-i-ty. Another error is mispronouncing the final '-ty' as a hard 'tee' without the short 'i' sound; aim for the /ɪ/ in the penultimate syllable, not a full /iː/. Practice with slow, deliberate syllables and then speed up.
In US English, you’ll hear /ˌtɑkˈsɪsəti/ with a rhotic rless environment and a reduced second vowel sound in some dialects; UK English often uses /ˌtɒkˈsɪsɪti/ with shorter vowel in the first syllable and more clipped final syllable; Australian English tends to align with UK/US patterns but can exhibit slightly broader vowel qualities and a non-rhotic placement in careful speech. Key differences are vowel length and the exact vowel quality in /ɪ/ and /ə/ sequences.
The challenge lies in the multi-syllabic structure and the sequence of unstressed and reduced vowels: the 'tox' onset with a sharp /k/ cluster, followed by a stressed /ˈsɪs/ and a trailing /əti/ or /ɪti/ depending on accent. Keeping the second syllable strong while the third is reduced requires precise jaw and tongue control, and avoiding conflating /sɪs/ with /sɪzi/.
A common curiosity is whether the 'tox' prefix influences pronunciation across contexts. The prefix tox- is consistently pronounced with a hard /t/ and /k/ in Toxicity, not softened into /tɡ/ or /dʒ/. The main variability is in the mid vowels: US often has /ˈtɑkˌsɪsəti/ while UK and AU lean toward /ˈtɒkˌsɪsɪti/ with slightly shorter first vowels. Note the secondary stress on the second syllable (/ˈsɪ/).
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Toxicity originates from the French word toxicité, itself derived from Latin toxicitas, from toxicus meaning poisonous or venomous. The root toxic- traces to Greek toxikos, meaning of or poison; tox- is linked to toxin, which entered English via late Latin toxinum and Old French toxine. The term toxicity began entering scientific discourse in the 17th–18th centuries with the growing study of poisons and their effects on organisms. In modern usage, toxicity broadened beyond chemicals to describe harmful social, environmental, or ideological conditions. First known uses include medical and toxicology texts in the 19th century, with formal toxicology as a discipline coalescing in the early 20th century, emphasizing dose-response relationships, exposure assessment, and risk characterization.
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Words that rhyme with "Toxicity"
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