Hyphenation ofenneacontahedron

1. IPA Transcription: /ˌɛniː.əˌkɒn.təˈhiː.drən/

2. Morphemic Breakdown:

• Prefix: ennea- (Greek, meaning "nine")
• Root: conta- (Latin, from contus, meaning "point, spike") - contributing to the idea of faces/sides.
• Suffix: -hedron (Greek, meaning "face," "side") - denoting a polyhedron.

3. Stressed Syllables: The primary stress falls on the antepenultimate syllable: hi. Secondary stress is on the first syllable: en.

4. Syllables List with IPA and Rule Explanations:

• en-: /ɛn/ - Open syllable. Rule: Syllables typically end in a vowel sound.
• ne-: /niː/ - Open syllable. Rule: Vowel followed by a consonant, syllable break after the vowel.
• a-: /ə/ - Open syllable. Schwa sound, common in unstressed syllables. Rule: Vowel sound constitutes a syllable.
• con-: /kɒn/ - Closed syllable. Rule: Consonant cluster followed by a vowel, syllable break before the vowel.
• ta-: /tə/ - Open syllable. Rule: Vowel sound constitutes a syllable.
• he-: /hiː/ - Open syllable, stressed. Rule: Vowel followed by a consonant, syllable break after the vowel. Stress assignment based on polysyllabic word stress rules.
• dro-: /drən/ - Closed syllable. Rule: Consonant cluster followed by a vowel, syllable break before the vowel.
• n: /n/ - Syllable ending in a nasal consonant. Rule: Consonant can form a syllable if preceded by a vowel.

5. Syllable Division Rule Explanations:

• Vowel-Consonant-Vowel (VCV): The most common rule applied. Syllables are divided between vowels.
• Open Syllables: Syllables ending in a vowel sound are common and easily identified.
• Closed Syllables: Syllables ending in a consonant sound.
• Consonant Clusters: Syllable breaks occur before the vowel following a consonant cluster.

6. Exceptions/Special Cases per Syllable:

• The schwa sound /ə/ in "a-" is a reduced vowel, common in unstressed syllables.
• The diphthong /hiː/ in "he-" influences the stress pattern.

7. Exceptions/Special Cases for the Word as a Whole:

• The word's length and complex morphology make it an unusual case, but the standard syllable division rules still apply.
• The presence of Greek and Latin roots doesn't alter the English syllabification rules.

8. Grammatical Role & Syllabification Shifts:

The word is primarily a noun. Syllabification doesn't shift based on grammatical role, as it's a fixed orthographic form.

9. Definition & Semantics:

• Definition: A polyhedron with nine faces.
• Grammatical Category: Noun
• Synonyms: Nonagon, enneagon (referring to the faces)
• Antonyms: None directly applicable.
• Examples: "The mathematician described the properties of the enneacontahedron."

10. Alternative Pronunciations/Regional Variations:

Pronunciation variations are minimal. Some speakers might slightly reduce the vowel sounds in unstressed syllables, but the core syllabification remains consistent.

11. Phonological Comparison:

• Octahedron: oc-ta-he-dron. Similar structure with Greek/Latin roots and vowel-consonant syllable division.
• Pentagon: pen-ta-gon. Shorter, but follows the same pattern of Greek roots and VCV division.
• Dodecahedron: do-de-ca-he-dron. Longer, but exhibits the same pattern of combining Greek/Latin roots and applying VCV syllable division rules. The presence of consonant clusters is also similar.