Iron-deficiency anemia can cause fatigue (tiredness), shortness of breath, chest pain, and other symptoms. Severe iron-deficiency anemia can lead to heart problems, infections, problems with growth and development in children, and other complications.
Semantics is the study of meaning. It is a wide subject within the general study of language. An understanding of semantics is essential to the study of language acquisition (how language users acquire a sense of meaning, as speakers and writers, listeners and readers) and of language change (how meanings alter over time).
â¢ SUBJECT (verb). The verb SUBJECT has 4 senses: 1. cause to experience or suffer or make liable or vulnerable to. 2. make accountable for. 3. make subservient; force to submit or subdue. 4. refer for judgment or consideration. Familiarity information: SUBJECT used as a verb is uncommon.ypernyms (subject is a kind of...): knowledge base; knowledge domain (the content of a particular domain or field of knowledge). Hyponyms (each of the following is a kind of subject): futuristics; futurology (the study or prediction of future developments on the basis of existing conditions).