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Formação de palavras 
Processos morfológicos de formação de palavras 
• Derivação 
• Composição 
Processos irregulares de formação de palavras 
• Sigla 
• Acrónimo 
• Truncação 
• Amálgama 
• Empréstimo 
• Onomatopeia 
• Extensão semântica
Sigla 
Palavra que resulta da redução de um grupo de 
palavras às suas iniciais, pronunciando-se letra a 
letra. 
AVC (Acidente Vascular Cerebral) 
TSF (Telefonia Sem Fios) 
RTP ( Rádio e Televisão de Portugal)
Acrónimo 
Palavra que resulta da junção de letras ou sílabas 
iniciais de um grupo de palavras, sendo pronunciada 
como uma palavra só. 
IVA (Imposto sobre o Valor Acrescentado) 
INEM (Instituto Nacional de Emergência Médica) 
UNICEF (United Nations Children’s Fund)
Truncação 
Processo que consiste na criação de uma palavra 
a partir do apagamento de parte da palavra de 
que deriva. 
Otorrino (otorrinolaringologista) 
Foto (fotografia) 
Metro (metropolitano)
Amálgama 
Palavra resultante da junção de partes de duas 
ou mais palavras. 
Informática (informação + automática) 
Cibernauta (cibernética + astronauta) 
Portunhol (português + espanhol) 
Pensatempos (pensamentos + passatempos)
Empréstimo (estrangeirismo) 
Palavra estrangeira adoptada por uma língua. 
Slogan 
Ranking 
Croissant
Onomatopeia 
Palavra criada por imitação de um som 
produzido por objetos, animais, fenómenos 
naturais. 
Miaauuu 
Bang 
Catrapus
Extensão Semântica 
Palavra já existente que adquire um novo 
significado. 
Portal , Janela (No âmbito da informática)

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Formação de palavras e seus processos

  • 1. Formação de palavras Processos morfológicos de formação de palavras • Derivação • Composição Processos irregulares de formação de palavras • Sigla • Acrónimo • Truncação • Amálgama • Empréstimo • Onomatopeia • Extensão semântica
  • 2. Sigla Palavra que resulta da redução de um grupo de palavras às suas iniciais, pronunciando-se letra a letra. AVC (Acidente Vascular Cerebral) TSF (Telefonia Sem Fios) RTP ( Rádio e Televisão de Portugal)
  • 3. Acrónimo Palavra que resulta da junção de letras ou sílabas iniciais de um grupo de palavras, sendo pronunciada como uma palavra só. IVA (Imposto sobre o Valor Acrescentado) INEM (Instituto Nacional de Emergência Médica) UNICEF (United Nations Children’s Fund)
  • 4. Truncação Processo que consiste na criação de uma palavra a partir do apagamento de parte da palavra de que deriva. Otorrino (otorrinolaringologista) Foto (fotografia) Metro (metropolitano)
  • 5. Amálgama Palavra resultante da junção de partes de duas ou mais palavras. Informática (informação + automática) Cibernauta (cibernética + astronauta) Portunhol (português + espanhol) Pensatempos (pensamentos + passatempos)
  • 6. Empréstimo (estrangeirismo) Palavra estrangeira adoptada por uma língua. Slogan Ranking Croissant
  • 7. Onomatopeia Palavra criada por imitação de um som produzido por objetos, animais, fenómenos naturais. Miaauuu Bang Catrapus
  • 8. Extensão Semântica Palavra já existente que adquire um novo significado. Portal , Janela (No âmbito da informática)